Walking 7/6 of his usual rate, a boy reaches his school 7 min early. Find his usual time to reach the school? Choose the correct choice from the following choices
A) 22  B) 28  C) 99  D) 49  E) 66
Speed Ratio = 1:7/6 = 6:7   Time Ratio = 7:6   1 -------- 7   7--------- ? 49 m   Answer:49
<result>D</result>
Walking 7/6 of his usual rate, a boy reaches his school 7 min early. Find his usual time to reach the school?