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Popular Word Problems >

the sum of three numbers is 69. the third is 2 times the second. the first number is 9 more than the second. what are the numbers

Solución

t h e s u m o f t h ree n u mb ers i s 69. t h e t hi r d i s 2 t im es t h e seco n d . t h e f i rs t n u mb er i s 9 m ore t han t h e seco n d . w ha t a re t h e n u mb ers

Solución

The numbers : 24, 15, 30

Pasos de solución

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 69

z = 2 y

x = 9 + y

x + y + z = 69, z = 2 y, x = 9 + y : x = 24, y = 15, z = 30

The numbers : 24, 15, 30

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