১২০৯১
A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is _____
উত্তর
82 km/hr
১২০৯২
A can complete a certain work in 4 minutes, B in 5 minutes, C in 6 minutes, D in 10 minutes and E in 12 minutes. The average number of units of work completed by them per minute will be ______
উত্তর
0.16
১২০৯৭
A boat goes 8 km in one hour along the stream and 2 km in one hour against the stream. The speed in km/hr of the stream is _____
উত্তর
3
১২০৯৯
The sum of twice a number and three times of 42 is 238. What is the sum thrice the number and two times of 42?
উত্তর
252
১২১০০
X can complete a certain work in the same time in which Y and Z together can do it. If X and Y together can finish it in 10 days and Z alone in 15 days, then Y alone can do it in?
উত্তর
60 days