১১৩৮৩
Two trains of equal length are running on parallel lines in the same direction at 46km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is
উত্তর
50m
১১৩৮৪
A takes twice as much times as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in.
উত্তর
6 days
১১৩৮৫
The percentage profit earned by selling an article for Tk. 1,920 is equal to the percentage loss incurred by selling the same article for Tk. 1,280. At what price should the article be sold to make 25% profit?
উত্তর
Tk. 2,000
১১৩৮৬
A boy traveled from the home to the college at the rate or 25 km/hr and walked back at the rate of 4 km/ hr. If the whole journey took 5 hours 48 minutes, find the distance of the college from the home.
উত্তর
20 km
১১৩৮৮
Two men and three boy can repair a bridge in 10 days while three men and two boy can do same work in 8 days. If two men and one boy are used to finish this work, in how many a they will complete it?
উত্তর
12.5 days
১১৩৮৯
A boatman takes twice as long to go a distance upstream as to travel the same distance downstream. What is the ratio of the speed of the boatman (in still water) and the current?
উত্তর
3 : 1
১১৩৯০
Speed of a boat in standing water is 9 km/hr and the speed of the stream is 1.5 km/hr. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
উত্তর
24