Question
Gatiman express train crosses a platform in 30 seconds
while it can cross a pole in 10 seconds. If the speed of the Gatiman express is 30 m/s, then find the length of the platform?Solution
Length of the train = 30 × 10 = 300 metres Let the length of the platform be ‘p’ metres ATQ; p + 300 = 30 × 30 Or, p = 900 – 300 Or, p = 600
A rectangle has an area 30 cm 2 and perimeter 26 cm. its length (in cm) is
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