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Phổ biến Word Problems >

Rohan is twice as old as Mahi. Seven years ago, the sum of their ages was 31 . How old is Mahi now?

Lời Giải

R o han i s tw i ce a s o l d a s M ahi . S e v e n ye a rs a g o, t h e s u m o f t h e i r a g es w a s 31 . Ho w o l d i s M ahi n o w ?

Lời Giải

Mahi^{'} s age is : 15

Các bước giải pháp

Translate the problem into an equation:

2 x - 7 + x - 7 = 31

Giải

x, 2 x - 7 + x - 7 = 31 : x = 15

Mahi^{'} s age is : 15

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