Question

22. Find the two numbers whose sum is 75 and difference is 15.​

Answer 1

Let the two numbers be x and y

According to the first condition

x + y = 75.........(1)

According to the second condition

x – y = 15.......... (2)

Add equation (1) and (2)

x + y 75

x – y = 15

_________

2x = 90

x = 90/2

x = 45

Put x = 45 in equation(1)

45 + y = 7

y = 75 – 45

y = 30

.°. The two numbers are 45 and 30