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UPSC CDS I 2019 Math Paper

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Question : 56

Total: 100

There are two parallel streets each directed North to South. A person in the first street travelling from South to North wishes to take the second street which is on h is rig h t side. At some place, he makes a 150° turn to the right and he travels for 15 minutes at the speed of 20 km/hr. After that he takes a left turn of 60° and travels for 20 minutes at the speed of 30 km /hr in order to meet the second street. What is the distance between the two streets ?

7.5 km
10.5 km
12.5 km
15 km

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