boy increases his speed to \(\frac{9}{5}\) times of his original speed. By this he reaches his school 30 minutes before the usual time. How much time does he takes usually?

boy increases his speed to \(\frac{9}{5}\) times of his original spee

1.	boy increases his speed to \(\frac{9}{5}\) times of his original speed. By this he reaches his school 30 minutes before the usual time. How much time does he takes usually?
A.	67.75 minutes
B.	67.50 minutes
C.	67.25 minutes
D.	67.10 minutes
Answer» C. 67.25 minutes

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boy increases his speed to \(\frac{9}{5}\) times of his original speed. By this he reaches his school 30 minutes before the usual time. How much time does he takes usually?

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