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פּוֹפּוּלָרִי Word Problems >

the sum of three numbers is 63. The third number is 2 times the first. The first number is 5 more than the second. What are the numbers?

פתרון

t h e s u m o f t h ree n u mb ers i s 63. T h e t hi r d n u mb er i s 2 t im es t h e f i rs t . T h e f i rs t n u mb er i s 5 m ore t han t h e seco n d . Wha t a re t h e n u mb ers ?

פתרון

The numbers : 17, 12, 34

צעדי פתרון

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 63

z = 2 x

x = 5 + y

x + y + z = 63, z = 2 x, x = 5 + y : x = 17, y = 12, z = 34

The numbers : 17, 12, 34

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