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인기 있는 Word Problems >

The sum of two numbers is 72. The larger number is 3 less than 3 times the smaller number. Find the smaller number.

해법

T h e s u m o f tw o n u mb ers i s 72. T h e l a r g er n u mb er i s 3 l ess t han 3 t im es t h e s ma ll er n u mb er . F in d t h e s ma ll er n u mb er .

해법

The number : 18 \frac{3}{4}

솔루션 단계

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x + y = 72

x = 3 y - 3

x + y = 72, x = 3 y - 3 : x = \frac{213}{4}, y = \frac{75}{4}

부적절한 분수를 혼합 숫자로 변환:

\frac{75}{4} = 18 \frac{3}{4}

The number : 18 \frac{3}{4}

인기 있는 예

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