Question

Which of the following has a solution of 4?

5 times the reciprocal of four-fifths

nine divided by four-ninths

six-sevenths of four and two-thirds

three-fifths times three-twentieths

Answer 1

5 times reciprocal of 4/5 :
5 * 5/4 = 20/4 = 5
not this one

9/(4/9) =
9 * 9/4 =
81/4 = 20 1/4
not this one

6/7 of 4 2/3 --- " of " means multiply
6/7 * 14/3 =
84/21 = 4
BINGO....found it.

Let me go ahead and check the last one..

3/5 * 3/12 = 9/60 = 3/20

It is the third one :)