20 / (4/5) = 25 Math: 20 divided by .8 = 200 divided by 8 = 25
20
25
It is 25*20 = 500
20
25
4
-20
Five (divided by) 20 (equals) 0.25 5÷20= .25
0
0.8
The product of 20 and 5 is 100. So when divided by the sum of 20 and 5, which is 25, it is 4. The problem is very simple. 100/25=4.