Walking 6/5 of his usual rate, a boy reaches his school 4 min early. Find his usual time to reach the school? Answers.
A) 22  B) 99  C) 27  D) 24  E) 20
Speed Ratio = 1:6/5 = 5:6   Time Ratio = 6:5   1 -------- 6   4 --------- ? 24 m.Answer:24
<result>D</result>
Walking 6/5 of his usual rate, a boy reaches his school 4 min early. Find his usual time to reach the school?