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인기 있는 Word Problems >

Jack is 6 years older than Jill. If four years ago Jack was 3 years less than twice Jill's age, how old is Jill now?

해법

J a c k i s 6 ye a rs o l d er t han J i ll . I f f o u r ye a rs a g o J a c k w a s 3 ye a rs l ess t han tw i ce J i l l^{'} s a g e, h o w o l d i s J i ll n o w ?

해법

Jill^{'} s age is : 13

솔루션 단계

Translate the problem into an equation:

x - 4 = 2 (x - 6 - 4) - 3

x

해결 대상

, x - 4 = 2 (x - 6 - 4) - 3 : x = 19

Jill's age 찾다 :

13

Jill^{'} s age is : 13

인기 있는 예

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