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Popular Word Problems >

The sum of two numbers is 30 and their difference is 12 .Write two equations and find the numbers.

Solution

T h e s u m o f tw o n u mb ers i s 30 an d t h e i r d i ff ere n ce i s 12 . W r i t e tw o e q u a t i o n s an d f in d t h e n u mb ers .

Solution

The numbers : 21, 9

Solution steps

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x + y = 30

x - y = 12

x + y = 30, x - y = 12 : x = 21, y = 9

The numbers : 21, 9

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