1.

Their sum is 39 and difference is 15​

Answer»

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Let one NUMBER be = x

Let the other number be = y

A.T.Q.

x + y = 39 ------ (1)

x - y = 15 ------- (2)

From (1)

x = 39 - y -------- (3)

Putting (3) in (2)

x - y = 15

( 39 - y ) - y = 15

39 - 2y = 15

39 - 15 = 2y

24 = 2y

y = \frac{24}{2}

y = 12 ------ (4)

Putting (4) in (1)

x + y = 39

x + 14 = 39

x = 39 - 14

x = 25

∴ One number is 25 and the other number is 14 .



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