Question

Two trains start from same place at same time at right angles to each other. Their speeds are 36km/hr and 48km/hr respectively. After 30 seconds the distance between them will be ?

A) 900 mts B) 300 mts C) 250 mts D) 500 mts

Answer 1

Answer:

D) 500 mts

Step-by-step explanation:

Using pythagarous theorem,

distance travelled by first train = 36x5/18x30 = 300m

distance travelled by second train = 48x5/18x30 = 400m

so distance between them =√( 90000 + 160000) = √250000 = 500mts.

Answer 2

Step-by-step explanation:

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