If 50% of x equals the sum of y and 20, then what is the value of x-2y?
A
20
B
40
C
60
D
80
Correct Answer: 40
ব্যাখ্যা: 50% of x = y + 20 50x / 100 = y + 20 x/2 = y + 20 x - 2y = 40