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Popular Word Problems >

The sum of three numbers is 66 . The second number is 2 times the third. The third number is 6 less than the first. What are the numbers?

Solução

T h e s u m o f t h ree n u mb ers i s 66 . T h e seco n d n u mb er i s 2 t im es t h e t hi r d . T h e t hi r d n u mb er i s 6 l ess t han t h e f i rs t . Wha t a re t h e n u mb ers ?

Solução

The numbers : 21, 30, 15

Passos da solução

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 66

y = 2 z

z = x - 6

x + y + z = 66, y = 2 z, z = x - 6 : x = 21, y = 30, z = 15

The numbers : 21, 30, 15

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