two numbers are in ratio 1:11 and their sum is 15. Find the numbers

해법

tw o n u mb ers a re in r a t i o 1 : 11 an d t h e i r s u m i s 15. F in d t h e n u mb ers

The numbers : 1 \frac{1}{4}, 13 \frac{3}{4}

솔루션 단계

Represent the numbers in ratio 1:11 with

x

x

11 x

Write an equation for the sum:

x + 11 x = 15

x

해결 대상

, x + 11 x = 15 : x = \frac{5}{4}

x = \frac{5}{4}

11 x = 11 \cdot \frac{5}{4} = \frac{55}{4}

부적절한 분수를 혼합 숫자로 변환:

\frac{5}{4} = 1 \frac{1}{4}

부적절한 분수를 혼합 숫자로 변환:

\frac{55}{4} = 13 \frac{3}{4}

The numbers : 1 \frac{1}{4}, 13 \frac{3}{4}