Walking 5/7 of his usual rate, a boy reaches his school 6 min late. Find his usual time to reach the school ?

Walking 5/7 of his usual rate, a boy reaches his school 6 min late. Fi

1.	Walking 5/7 of his usual rate, a boy reaches his school 6 min late. Find his usual time to reach the school ?
A.	10 min
B.	12 min
C.	15 min
D.	18 min
Answer» D. 18 min

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Walking 5/7 of his usual rate, a boy reaches his school 6 min late. Find his usual time to reach the school ?

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