The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?
A. 5
B. 8
C. 10
D. 12
E. 15
সঠিক উত্তরঃ
E.
15
Explanation:
Type explanation here...
Related Questions (Any University/Year)
- একখানা টেবিল 96 টাকায় বিক্রি করলে টেবিল এর ক্রয়মূল্য যত, লাভের শতকরা তত হয়। টেবিলটির মূল্য কত?
- The average of eight numbers is 14. and the average of six of these numbers is 16. What is the average of the remaining two numbers?
- Rahman is twice as old as Shermin. In y years Shermin will be 1.5 times older than she is now. What is Shermin's age?
- ২২, ২১, ২৩, ২২, ২৪, ২৩, ... পরবর্তী সংখ্যা কোনটি?
- On a 400-mile trip, car X traveled half the distance at 40 miles per hour and the other half at 50 miles per hour. What was the average speed of car X?
- The price of a laptop was sold at 10% discount on the price. If the profit is Tk. 2400 what was the cost of the laptop is TK?
- A certain machine fills a bag with 7 ounces of potato chips in 3.5 seconds. At this rate how many seconds will it take the machine to fill a bag with 15 ounces of potato chips?
- In Township K each property is taxed at 8 percent of its assessed value. If the assessed value of a property In Township K is increased from $20,000 to $24,000, by how much will the property tax increase?
- A shopkeeper marks an article at such a price that after allowing a discount of 30% on the tag price (including tax) he makes a profit of 40%. If the tag price of the article including tax is Tk. 460, then the cost price of that article is -
- Which of the following is equal to 85 percent of 160?
- The price of sugar increased by 10%. What percentage of consumption of sugar is to be reduced in order to keep the expenditure on sugar at the same level?
- Six years ago Anita was P times as old as Ben. Anita is now 17. How old is Ben now in terms of p?
- Ehsan was preparing to make a tape from some of his favourite songs. He noticed that Hadi's song was 1 minute longer than Bonna's song. Duration of Niaj's song was 1 minute shorter than twice the duration of Bonna's song. If the total time for these songs is 12 minutes, how long is Niaj's song?
- x+y=12 এবং x-y=2 হলে xy এর মান কত ?
- The total weight of a tin and the cookies it contains is 2 Pounds. After 3/4 of the cookies are eaten, the tin and the remaining cookies weight 0.8 Pounds. What is the weight of the empty tim in pounds.
- Instructions: DO NOT USE CALCULATOR. Figures are not drawn to scale. Kalam takes 2 days more than what Zakir takes to produce x chairs. They work together for 6 days and produce 24x chairs. How many days will it take Kalam to produce 2x chairs?
- . 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?
- In takes one machine 4 hours to complete a production order and another machine 3 hours to complete the same order. How many hours would it take when both machines complete the order simultaneowsly at their respective rates?
- An ambulance travels 10 miles at a speed of 75 miles per hour. How fast must the ambulance travel on the return trip if the round-trip travel time is to be 20 minutes?
- If a family was randomly picked from the families in the previous question, what is the probability (approximately) of that family having working mothers as member?
- 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?
- There is 50% chance that Rafiq will go to a fast food restaurant for lunch and 50% chance that he will skip lunch. If he goes to a fast food restaurant there is 60% chance that he will take only a sandwich and nothing else. If he decides not to take a sandwich he will take a burger of a chicken pie. What is the probability that he will take a burger?
- The measure of the side of a square is tripled. If x represents the perimeter of the original square , what is the value of the new perimeter?
- X হচ্ছে একটি ধনাত্মক সংখ্যা। যখন X+1 কে ৬ দ্বারা ভাগ করা হয় তখন অবশিষ্ট থাকে ৫। X কে ?? দ্বারা ভাগ করলে অবশিষ্ট থাকে-
- The ratio of Pens and Pencils in a shop is 3 : 2 respectively . The average number of Pens and Pencils is 180. What is the number of Pencils in the shop?
- An electric pole 36 meters high casts a shadow of 24 meters at a particular time of a day. Find the height of a tower if it casts a shadow of 48 meters under similar weather conditions
- If a/x+b=1 , what is the value of x?
- Two men P and Q Start from a place walking at 5 km /hr and 6.5 km/hr, respectively . What is the time they will take to be 92 km apart , they walk in opposite directions?
- If 12 men can reap 120 acres of land in 36 days, how many acres of land can 54 men reap in 54 days?
- In a class 60% of the students enrolled for Math and 70% enrolled for Economics... what % of the students of the class did not enroll for either of the two subjects?
- কোন সংখ্যার 3/8 অংশ 27 ?
- A set of 6 flower vases of different sizes cost Base taka 825. Each vase costs 25 taka more than the next on below it in size. What was the cost of the largest vase?
- An amount of money is to be distributed among P, Q and R in the ratio of 6:19:7 respectively. If R gives Tk. 200 of his share to Q. the ratio among P, Q and R becomes 3:10:3 respectively. What was the total amount in taka?
- A number is divided by 4. The result is divided by 3. The final result is 2. What was the original number?
- If a man's weekly salary is Tk. P and he saves Tk. M, what faction of his weekly salary does he spend?
- If a doctor gives you 3 pills and tells you take one pill every half hour, how long would it be before all the pills had been taken?
- Thereare 209 doctors and nurses in a hospital. If the ratio of the doctors to the nurses is 11:8, then how many nurses are there in the hospital?
- An employee can choose one of two methods of annual payment either an annual salary of Tk. 35,000 with no commission or an annual salary of Tk. 10,000 plus a 20% commission on her annual sales. What must be her total annual sales to get the same annual payment in either method?
- A trader purchased some pen for TK 120. If the price of each pen were Tk. 3 less, he would have got 2 more pens, How many pens did he buy?
- ৮ টি বানর ৮ মিনিটে ৮ টি কলা খায়, ৪৮ মিনিটে ৪৮ টি কলা কতটি বানর খেতে পারবে?