The speed of a motor boat is 20 km/hr. for covering the distane of 15 km the boat took 1 hour more for upstream than downstream. Let speed of the stream be x km/hr, then speed of the motorboat in upstream will be-
A. (20-x)km/hr
B. (20+x)km/hr
C. 20 km/hr
D. 2 km/hr
JUIBA (Unit-G)Set-Dমানসিক দক্ষতা(IQ)গাণিতিক সমস্যাIQ-4 (Topic Practice)JU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
A.
(20-x)km/hr
Explanation:
Related Questions (Any University/Year)
- Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to British stamps is 5 to 1, what is the ratio of US to British stamps?
- A painter used one-fourth of her paint on one room and one-third of her paint on a second room. If she had 10 gallons of paint left after painting the second room, how many gallons did she have when she began?
- There are 30 socks in a drawer. 60% of the socks are red and the rest are blue. What is the minimum number of socks that must be taken from the drawer without looking in order to be certain that at least two red socks have been chosen?
- current age ratio of father and son is 7:2 After 5 years, their age ratio will be 8:3 what is the corrent age of father?
- সাকিবের ১০ ইনিংসের রানের গড় ৪৫.৫। ১১তম ইনিংসে কত রান করে আউট হলে সব ইনিংস মিলিয়ে তার রানের গড় ৫০ হবে?
- 1, 2, 6, 7, 9: A 3-digit integer is to be formed from the digits listed above. If the first digit must be odd, either the second or the third digit must be 2, and no digit may be repeated, how many such integers are possible?
- A salesman makes a 20 percent commission on the selling price of each set of encyclopedias he sells. If he sells 12 identical sets of encyclopedias and makes $1,800 in commissions, what is the selling price of each set?
- যদি একটি কামান থেকে নিম্নলিখিত ৪টি বস্তুকে অনুভূমিক ভাবে নিক্ষেপ করা হয়, তবে কোনটি সবচেয়ে বেশি দূরে উড়ে যাবে?
- A waiter's salary consists of his salary and tips. During one month his tips were 5/4 of his salary. What fraction of his income came from tips?
- An empty swimming pool with a capacity of 5760 gallons is filled at the rate of 12 gallons per minute what is the time taken?
- 9 numbers are written in ascending order, middle number is average of that nine numbers. Average of five larger numbers is 68 and also average of five smaller numbers is 44. What is the sum of all nine numbers?
- 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?
- Of the 400 students in a business school, 30% were women and of these 1/5th became entrepreneurs. If the number of men who became entrepreneurs was twice the number of women entrepreneur s, how many men became entrepreneurs?
- Real Madrid has won 40 games out of 60 played. It has 32 more games to play. How many of these must the team win to make its record 75% win for the season?
- Sadman has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount?
- 9 men went to a restaurant together. 8 of them spent Tk. 3 each over their meals and the 9th man spent Tk. 2 more than the average expenditure of all the 9 men. Find out the total money spent by the 9 men?
- If s shirts can be purchased for d dollars, how many shirts can be purchased for t dollars?
- In Rajshahi 5 adults are unemployed for every 120 adults who have jobs. Out of 2125 adults, how many have jobs?
- A train covers the distance y miles between two cities at a speed of x mph, arriving 2 hours late. What speed would permit the train to arrive on schedule?
- Sume of the examloees came from North South University to BUP and shock hands with one another before the admission test. The totalnumber of hand-shakes was 6 How many examinees were from North South University?