Question

The sum of two number is 60 and their difference is 10 find the numbers
A. 40,20

Answer 1

Let the numbers be x and y

x+y=50………..(1)

x-y=10……….(2)

Adding (1) & (2)

2x = 60

x = 30

and substituting this value of x in x+y=50

30 + y =50

y = 50–30=20

So numbers are 30 & 20.