When 40 is decreased by 30% the result is 28.
It is X*0.21 - 16
30 - 15 =15
6.4
16
420
20% = 1/54 + 4 + 4 + 4 + 4 = 2020 decreased by 20% is 16, therefore the answer is 20
45
It can be: 20-16 = 4
75% decrease.
It is: 600-96 = 504
20% of 80 is 16 and 80-16= 64