A man spent exactly $2.50 on 3¢, 6¢ and 10¢ stamps. If he bought 10 3¢ stamps and twice as many 6¢ stamps as 10¢ times, how many 10¢ stamps did he buy?
A. 5
B. 10
C. 12
D. 15
E. 20
সঠিক উত্তরঃ
B.
10
Explanation:
Related Questions (Any University/Year)
- একখানা টেবিল 96 টাকায় বিক্রি করলে টেবিল এর ক্রয়মূল্য যত, লাভের শতকরা তত হয়। টেবিলটির মূল্য কত?
- The population of a country increased by an average of \(1\%\) per year from 2016 to 2019 . if the population of this country was 21 million on December 31, 2019, then the population of this country on January 1, 2016, to the nearest thousand had been ____________.
- During a particular day, x number of applicants came to IBA to submit their applications before lunch. Of them 70% were male applicants. On the same day, y number of applicants came to submit their application after lunch and all of them were male applicants. On that particular day , the ratio of male applicants to female applicants was 4:1. Calculate y in terms of x.
- The sale of TV increased by 30% when the price was reduced by 10%. What will be the percentage change in revenue?
- A motorcycle stunt man belonging to a fair rides over the vertical walls of a circular wall at an average speed of 54 km/h for 5 minutes. If the radius of the wall is 5 meters then the distance travelled is -
- If a and b possible integers and (a1/2b1/3)6 =432, what is the value of ab?
- If s shirts can be purchased for d dollars, how many shirt can be purchased for t dollars?
- . The number of students in each section of a school is 24. After admitting new students, three new sections were started Now, the total number of sections is 16 and there are 21 students in each section. How many new students were admitted?
- What is the greatest of consecutive integers Whose sum is 24?
- Arif bought 17 pens of three colors - black, green and red which cost Tk 5, Tk 10 and Tk 25 each. The total amount that Arif paid was Tk 205. If Arif bought twice as many green pens as red pens, how many black pens did he buy?
- A picnic was arranged by m students. Total cost of the picnic was estimated to be y taka. Unfortunately, z students withdrew their names from the picnic. How many more taka would each of the remaining students have to pay?
- A store usually a certain item at 40% profit. In one week the store has a sale during which the item is sold at 10% less then the usual price. During the sale what is the profit the store makes on the item ?
- The greatest possible value of C is how much greater than the smallest possible value of D?
- A certain machine can make 3 widgets every 27 seconds. At this rate, how many widgets will be made in 1 minute?
- এক ব্যক্তি তার স্ত্রী চেয়ে ৩ বছরের বড়। তার স্ত্রী বয়স তার ছেলের বয়সের ৪ গুন। ৪ ছর পর ছেলের বয়স হবে ১২ বছর। ঐ ব্যক্তির বর্তমান বয়স কত বছর?
- A car covers four successive 7 km distance at speeds of 10 km/hr, 20 km/hr, 30 km/hr and 60 km/hr , respectively . Its average speed over this distance is :
- A merchant sells an item at a 20 percent discount , but still makes a gross profit of 20 percent of the cost. what percent of the cost would be the gross profit on the item. if it were sold without discount?
- Out of their annual net income, a couple spent 25 percent for food, 13.5 percent for entertainment, 20 percent for housing, 8 percent for car expenses, 15 percent for clothing, and saved the rest. What was the ratio of the amount saved to the amount spent for entertainment?
- The average of four consecutive positive integers is always
- পিতা ও পুত্রের বয়সের অনুপাত 7:3 । 4 বছর পূর্বে তাদের বয়সের অনুপাত ছিল 13:5। বর্তমানে কার বয়স কত?
- Approximately what percent of Class X students play Table Tennis out of the total Class X students playing the different given games ?
- There are 200 questions in a 3-hour examination. Among the questions are 50 mathematics problems. It is suggested that twice as much time be allowed for each mathematics problem as for each of the other questions. How many minutes should be spent on the mathematics problems?
- একটি গাড়ির সামনের ও পেছনের চাকার পরিধি যথাক্রমে ৩ ও ৪ মিটার। গাড়িটি কত কিলোমিটার পথ অতিক্রম করলে সামনের চাকা পেছনের চাকার চেয়ে ১০০ বার বেশি ঘুরবে?
- Lamisa's age is 5 years more than twice Galib’s age. Zihan’s age is 13 years less than 10 times Galib’s age. If Zihan is 3 times as old as Lamisa, how old is Lamisa?
- Let the lengths of the sides of a tingle be represented by x +3, 2x -3 , 3x-5. If the perimeter of the triangle is 25, what is the length of the shortest side?
- Rokon, Saim and Nafisa had ate at MCafe. Nafisa's meal cost 50% more than Saim's meal and Rokon's meal cost 5 / 6th as much as Nafisa's meal. if Saim paid Tk1000 for his meal ,what was their total lunch bill?
- You are given the equation sqrt( 3x)+3=4, which one of the following is the correct value of x?
- কঃখ =৩ঃ৫, খঃগ =৪ঃ৭, হলে, কঃগ = কত?
- The electric company charge: Tk 0.3 per KWH. Rahim used 2800 KWH in April, 3200 KWH in May, and 3600 KWH in June. What was his average costs of electricity in taka for the 3 months?
- In a group of 100 adults, 75 percent of the women are left-handed. If there are 12 right- handed women in the group, how many men are in the group?
- (3 × 104)+(2 × 102)+(4 × 10)=
- A sport goods store ordered an equal number of white and yellow tennis balls. The tennis ball company delivered 30 extra tennis ball, making the ratio of white balls to yellow balls 6:5, How many tennis ball did the sport goods store originally order?
- A and B together can complete a piece of work in 72 days, B and C together in 120 days and A and C together in 90 days. A, B and C together can complete the work in?
- In a model high school, Physics course is divided into two sections. In section A, average score in the final exam was 92, while in section B, the average score was 84. If the average score of all 40 students in the course was 89, how many students are in Section A?
- On glancing through your morning newspaper you notice that four pages are missing. One of the missing pages is page 8. The back page of the newspaper is 28. What are the other three missing pages?
- Two staions P and Q are 110 km apart on a straight track. One train starts from P at 7 AM and travels towards Q at 20 kmph . Another train starts from Q at 8 AM and travels towards P at a speed of 25 kmph . At what time will they meet?
- B and C are points on a straight-line AD, where AB = BC = CD. What percent of AC is AD?
- One worker can do a job in M hours while it takes second worker N hours to do the same Job. How long does it take for both workers together to do the job?
- Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent?
- একজন ব্যাটসম্যান 26 রান করায় তার ব্যাটিং গড় 15 থেকে বেড়ে 16 হলাে। কত রান করলে তার ব্যাটিং গড় 20 হতাে?
