When 40 is decreased by 30% the result is 28.
40
20
It can be.
128 = N - 0.20N; 128 = .80N; N = 160
When 25 is decreased by 20% the result 20.
When 40 is decreased by 30% the result is 28.
40
20
120
176
60.8
It can be.
190
When 20% of 60 is taken away from it, you get 48.
128 = N - 0.20N; 128 = .80N; N = 160
31