If w is 10% less than x, and y is 30% less than Z, then why is what percent less than xz?
A
10%
B
20%
C
37%
D
40%
Correct Answer: 37%
w = x - 10% of x w = .9x and y = z - 30% of z = .7z ⸫ wy = .63xz = (1 - .37)xz অর্থাৎ 7% less