Question
A man can reach a certain place in 30 hours. If he reduces his speed by 1/15th, he goes 10 km less in that time. Find his speed.
Answer: Option B
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Let the speed be x km/hr. Then,
30x-30*14/15x = 10
⇔ 2x = 10
⇔ x = 10/2
= 5 km/hr
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