Question

By what percent will the product of two numbers decrease if one of them is decreased by 20% and the other is decreased by 50%?

Answer 1

Answer:

(x - .20)(x - .50)

$x^{2}$ = (.20)(.50)

$x^{2}$ = 0.1

x = $\sqrt{ .1$

x = .32

the product of two numbers decrease by 32%