Walking 4/3 of his usual rate, a boy reaches his school 4 min early. Find his usual time to reach the school?  Choose the correct choice from the following answers:	A) 22	B) 16	C) 27	D) 28	E) 20
Speed Ratio = 1:4/3 = 3:4   Time Ratio = 4:3   1 -------- 4   4 --------- ? 16 m.Answer:16
<result>B</result>
Walking 4/3 of his usual rate, a boy reaches his school 4 min early. Find his usual time to reach the school?