en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

The sum of Kim’s and Kevin’s age is 18. In 3 years, Kim will be twice as old as Kevin.What are their ages now?

Solution

T h e s u m o f K im ’ s an d Ke v in ’ s a g e i s 18. I n 3 ye a rs, K im w i ll b e tw i ce a s o l d a s Ke v in . Wha t a re t h e i r a g es n o w ?

Solution

Kim^{'} s age is : 13

Kevin^{'} s age is : 5

Solution steps

Translate the problem into an equation:

x + 3 = 2 (18 - x + 3)

Solve for

x, x + 3 = 2 (18 - x + 3) : x = 13

Find age

Kim^{'} s age is : 13

Kevin^{'} s age is : 5

Popular Examples

The quotient of a number and 11 After 1 year, the father's age will be 4 times the age of his son. After 5 years, the father's age will be three times the age of his son. Find the age of the father and his son.The diameter of a circle is 3 in. Find its area Find the area of two triangles put together with a base of 9 and height of 3 the product of 3 and 4 less than a number equals-4