Question
A person covers one-fourth of a trip at a speed of 10
km/hr and takes ‘x’ hours for that. If he had completed the whole journey at a speed of 20 km/hr, it would’ve taken him (x + 3) hours. Find the value of ‘x’.Solution
ATQ,
Let total distance = D km Then, 10 = D / (4x) -------- (i) 20 = D / (x + 3) -------- (ii) Equating both expressions for D, 10 × 4x = 20 × (x + 3) → 40x = 20x + 60 → 20x = 60 → x = 3
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