The sum of two numbers is 99; and their difference is 27. Which is the smaller number among them?
A27
B72
C63
D36
Answer:
D. 36
Read Explanation:
One Number = x
Second Number = y
According to question;
x + y = 99 ------(1)
x - y = 27 -------(2)
Subtract equation (2) from equation (1)
(x + y) - (x- y) = 99 - 27
2y = 72
y = 36
x + 36 = 99
x = 99 - 36
x = 63
