"Decreased by" just means "minus," so that's C-11.
60 decreased by 40 is 20.
620 - 20% = 496
15% of 20 is 3 so 20-3 = 17
20
45% decrease.
31
"Decreased by" just means "minus," so that's C-11.
320 decreased by -20 = 300
When 25 is decreased by 20% the result 20.
450 decreased 20% results in: 360
60 decreased by 40 is 20.
20% = 1/54 + 4 + 4 + 4 + 4 = 2020 decreased by 20% is 16, therefore the answer is 20
10
620 - 20% = 496
The expression is: 2y -20
32 - 20% = 25.6