১২৫২১
A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. What is the length of the bridge?
উত্তর
350 meter
১২৫২২
A dishonest shopkeeper professes to sell ghee at the cost price. But he uses a false weight of 950g for a Kilogram. His gain percentage is-
উত্তর
5.26
১২৫২৩
A sum of money at simple interest amount to tk. 2,800 in 2 years and to tk. 3,250 in 5 years at a rate of:
উত্তর
6%
১২৫২৪
A dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of the dog is equal to 4 leaps of the hare. Compare their speeds:
উত্তর
16 : 15
১২৫২৫
In a mixture of 50 liters milk and water are in the ratio of 3 : 2. How much water should be added to the mixture to make the ratio of the two equal?
উত্তর
8 liters
১২৫২৭
A room of size 5m × 3m and height 3m requires walls and ceiling painting. What is the area to be painted?
উত্তর
63 sq. m
১২৫২৮
The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by:
উত্তর
82%
১২৫২৯
A husband and wife have six married sons. Each of them has four children. The total number in the family is:
উত্তর
38
১২৫৩০
A father is 61 and his son is 16. In how many years will the father be twice as old as his son?
উত্তর
29