A takes 3 hours more than B to walk d km. If A doubles his speed then – McqOptions

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1.	A takes 3 hours more than B to walk d km. If A doubles his speed then he can make it in 2 hours less than B. How much time does B required for walking d km ?
A.	5 hr
B.	6 hr
C.	7 hr
D.	9 hr
Answer» D. 9 hr

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