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Popolare 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.

Soluzione

t h e s u m o f t h e a g es o f a b oy an d a g i r l i s 18 ye a rs . F o u r ye a rs a g o t h e g i r l w a s f o u r t im es t h e a g e o f t h e b oy . F in d t h e p rese n t a g e o f e a c h c hi l d .

Soluzione

Boy^{'} s age is : 6

Girl^{'} s age is : 12

Fasi della soluzione

Translate the problem into an equation:

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

Risolvi per

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

Trova age

Boy^{'} s age is : 6

Girl^{'} s age is : 12

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