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ATQ, Average = Sum of quantities / No. of quantities Calculations: (P1 + P2 + P3)/3 = 60 ⇒ P1 + P2 + P3 = 180 ⇒ 20 + P2 + P3 = 180 ⇒ P2 + P3 = 160 Now, the average of P2 and P3 is = (P2 + P3) / 2 = 160 / 2 = 80
A train traveling at 20 m/s crosses a bridge that is 400 metres long in 35 seconds. What is the length of the train?
A 240 m long train crosses a platform twice its length in 3 min. Find the speed of the train.
A train crosses a pole and a platform of length 576 metres in 12 seconds and 30 seconds, respectively. Find the length of train.
Two trains approach each other at 15 kmph and 25 kmph from 2 places 280 km apart. After how many hours they will meet?