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人気のある Word Problems >

A number is thrice another number. Their sum is 40. What are the numbers?

解

A n u mb er i s t h r i ce an o t h er n u mb er . T h e i r s u m i s 40. Wha t a re t h e n u mb ers ?

解

The numbers : 30, 10

解答ステップ

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x = 3 y

x + y = 40

x = 3 y, x + y = 40 : x = 30, y = 10

The numbers : 30, 10

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