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Phổ biến Word Problems >

Cody is twice as old as Evan. Three years ago the sum of their ages was 27. Find the age of Evan three years ago.

Lời Giải

Cody is twice as old as Evan. Three years ago the sum of their ages was 27. Find the age of Evan three years ago.

Lời Giải

Eva n^{'} s age 3 years ago : 8

Các bước giải pháp

Translate the problem into an equation:

2 x - 3 + x - 3 = 27

Giải

x, 2 x - 3 + x - 3 = 27 : x = 11

Tìm Evan's age 3 years ago:

8

Eva n^{'} s age 3 years ago : 8

Ví dụ phổ biến

Seven less than twice a number is the same as one less than the number.Find the number.Five less than a number squared is 30 more than twice the number. Find the number.twenty less than one third of the number is 72.find the number Subtract a number from 7 and the result is 4 . Find that number.Twice a number reduced by 5 equals the number. Find the number.