GMAT Exam Category

A train takes 10 seconds to cross a man standing on a platform and 44 seconds to cross the platform. What is the length of the platform. What is the length of the platform if the speed of the train is 72 kmph?
a)440 m b)570 m c)680 m d)none of these

Read Solution (Total 1)

speed of the train = 72*(5/18)=20
Crossing man,
20=D/10
Distance i.e length of the train=200m
Crossing platform,
20= (200+Length of Platform)/44
Length of the platform = 880-200= 680m
8 years agoHelpfull: Yes(1) No(0)

GMAT Other Question

A school has created a new software to make learning math easy and fun. The software has several games, to advance to next level the children have to solve some puzzles. In one such activity, there is a monkey and a mangoseller. The mangoseller asks the monkey to solve the following puzzle in return for a couple of mangoes. Counted in twos there were 1 mangoes that remained, counted in threes there were 2 that remained, counted in fours there were 1 that remained, counted in fives there were 2 that remained, counted in sixes there were 5 that remained and when counted in sevens there were none left. The activity then pops up a screen asking you if you can help the monkey guess the number of mangoes there were in the basket? A train travelling at 36 kmph takes 48 seconds to cross a bridge. It then crosses a man cycling at the rate of 9 kmph in the same direction in 20 seconds. Find the length of the bridge
a)150 m b)220 m c)280 m d)330 m