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Phổ biến >

The sum of the ages of Jose and Mackenzie is 100 years. 10 years ago, Jose's age was 3 times Mackenzie's age. How old is Jose now?

Lời Giải

The sum of the ages of Jose and Mackenzie is 100 years. 10 years ago, Jose's age was 3 times Mackenzie's age. How old is Jose now?

Lời Giải

Jose^{'} s age is : 70

Các bước giải pháp

Translate the problem into an equation:

x - 10 = 3 (100 - x - 10)

Giải

x, x - 10 = 3 (100 - x - 10) : x = 70

Jose^{'} s age is : 70

Ví dụ phổ biến

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