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인기 있는 >

jack is twice as old as jill. Ten years from now, the sum of their ages will be 50. Find the present age of each

해법

jack is twice as old as jill. Ten years from now, the sum of their ages will be 50. Find the present age of each

해법

Jill^{'} s age is : 10

Jack^{'} s age is : 20

솔루션 단계

Translate the problem into an equation:

2 x + 10 + x + 10 = 50

x

해결 대상

, 2 x + 10 + x + 10 = 50 : x = 10

age 찾다

Jill^{'} s age is : 10

Jack^{'} s age is : 20

인기 있는 예

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