২৫৮০২
A 55 meter long train passes a 220 meter long railway station in 10 seconds. How many seconds will it take to pass another train 110 meter long?
উত্তর
6 sec
২৫৮০৩
It takes 72 hours for five workers to paint an office building. If the number of hours worked is inversely proportional to the number of workers, how many hours should it take six workers to paint the building?
উত্তর
60 hours
২৫৮০৫
Apu took 3/5 of the marble kept in a box. His younger took another 3/5 of the remaining marbles.Then his sister took another 3/5 of remaining marbles. What fractions of the marble are left in the box?
উত্তর
8/125
২৫৮০৬
There are three different roads from Shah Bag to Farm Gate and 4 different roads from Farm Gate to Banani. How many different routes are there Shah Bag to Banani which go through Farm Gate?
উত্তর
12
২৫৮০৭
A,B,C and D enter into parternership. A subscribes 1/3 of the capital, B14, C15 and D the rest. What is the share of D out of a profit of TK. 6000?
উত্তর
TK.1300