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Phổ biến Word Problems >

John is 5 years older than Bob who is 10 years older than Jack. The sum of their ages is 57. how old is Bob?

Lời Giải

J o hn i s 5 ye a rs o l d er t han B o b w h o i s 10 ye a rs o l d er t han J a c k . T h e s u m o f t h e i r a g es i s 57. h o w o l d i s B o b ?

Lời Giải

Bob^{'} s age is : 20 \frac{2}{3}

Các bước giải pháp

Translate the problem into an equation:

x + 5 + x + x - 10 = 57

Giải

x, x + 5 + x + x - 10 = 57 : x = \frac{62}{3}

Chuyển phân số không thực sự thành hỗn số:

20 \frac{2}{3}

Bob^{'} s age is : 20 \frac{2}{3}

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