a) 20 - 100%
x - 110%
x = 20 * 110/100 = 22
150 - 100%
x - 110%
x = 150 * 110/100 = 165
b) 20 - 100%
x - 80%
x = 20 * 80/100 = 16
150 - 100%
x - 80%
x = 150 * 80/100 = 120
c) 20 - 100%
x - 50%
x = 20 * 50/100 = 10
150 - 100%
x - 50%
x = 150 * 50/100 = 75
d) 20 - 100%
x - 125%
x = 20 * 125/100 = 25
150 - 100%
x - 125%
x = 150 * 125/100 = 187,5