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A boy increases his speed to (9)/(5) tim...

A boy increases his speed to `(9)/(5)` times of his original speed .By doing this ,he reaches his school 40 minutes before the usual time .How much time (in minutes )does he take usually ?

A

120

B

30

C

45

D

90

Text Solution

Verified by Experts

The correct Answer is:
D
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