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Q.
In a race of 800m Kaushik gives Piyush a start of 200m and then loses the race by 20 seconds. What is the speed of Piyush and Kaushik respectively ? If the ratio of respective speeds be 3:2.
A.
10 m/s
B.
30 m/s
C.
20 m/s
D.
40 m/s
E.
None of the above
View Answer
Correct choice: C
Explanation:
Let the speed of Kaushik be Sk and speed of Piyush be Sp and let the time taken by Piyush be t second then, Sk/Sp = 800/t+20/ 600/t = 2/3(since given ratio)
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