Question

the sum of two numbers is 40 and the difference between them is 14. what is his income?

Answer 1

Let the two numbers be a and b.
a+b= 40 .....(1)
a-b=14. .....(2)

By adding eq(1) and eq(2),
a+b+a-b=14+40
2b=54
b=27
Now putting value of b in eq(1),
a+27=40
a=40-27
a=13

Answer 2

Hey Mate..!!

Here's Your Answer..!!

Simultaneous Equation-

Let one no. be X
And other no. be Y

Therefore,
x+y = 40........(i)
And
x-y = 14..........(ii)

Adding equation (i) and (ii)-
x+y = 40
x-y = 14
_______
2x = 54
x = 54/2
x = 27

Now, let's find the value of y by inserting X's value in equation (i)

x+y=40
27+y=40

This implies that,
y = 40-27
y= 13


Hope This Helps..!!

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