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受欢迎的 Word Problems >

The sum of three numbers is 84. The first number is 6 less than the second. The third number is 4 times the second. What are the numbers?

解答

T h e s u m o f t h ree n u mb ers i s 84. T h e f i rs t n u mb er i s 6 l ess t han t h e seco n d . T h e t hi r d n u mb er i s 4 t im es t h e seco n d . Wha t a re t h e n u mb ers ?

解答

The numbers : 9, 15, 60

求解步骤

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 84

x = y - 6

z = 4 y

x + y + z = 84, x = y - 6, z = 4 y : x = 9, y = 15, z = 60

The numbers : 9, 15, 60

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