Q. Two trains in the same direction at 50 & 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes him. What is the length of faster train?
Q. A car is journied a certain distance in 7 hrs in forward journey in the return journey increased speed 12km/hr takes the times 5 hrs. what is the distance
Q. The ratio of no. of boys & girls in a school is 3:2 Out of these % the boys & 25% of girls are scholarship holders. % of students who are not scholarship holders.?