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Phổ biến Word Problems >

the sum of the ages of a boy and a girl is 18 years. Four years ago the girl was four times the age of the boy. Find the present age of each child.

Lời Giải

the sum of the ages of a boy and a girl is 18 years. Four years ago the girl was four times the age of the boy. Find the present age of each child.

Lời Giải

Boy^{'} s age is : 6

Girl^{'} s age is : 12

Các bước giải pháp

Translate the problem into an equation:

18 - x - 4 = 4 (x - 4)

Giải

x, 18 - x - 4 = 4 (x - 4) : x = 6

Tìm age

Boy^{'} s age is : 6

Girl^{'} s age is : 12

Ví dụ phổ biến

Kira went for a drive in her new car. She drove for 1 miles at a speed of 10 mph. For how many hours did she drive?The hiệu of twice a number and 7 is 9.74 more than six times a number is 23 less than the product of the same number and 11 the sum of twice a number and five is 11 determined the number The product of a number decreased by 5 and the same number increased by 2 is 8. Find all numbers that satisfy this condition.