en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

Andrew is 6 years older than twice Maddy's age. If the sum of their ages is 78, how old is Maddy?

Solution

A n d re w i s 6 ye a rs o l d er t han tw i ce M a dd y^{'} s a g e . I f t h e s u m o f t h e i r a g es i s 78, h o w o l d i s M a dd y ?

Solution

Maddy^{'} s age is : 24

Solution steps

Translate the problem into an equation:

x - 6 = 2 (78 - x)

Solve for

x, x - 6 = 2 (78 - x) : x = 54

Find Maddy's age

: 24

Maddy^{'} s age is : 24

Popular Examples

10 is 20% of what number?:[?]The radius of a circle is 5 in. Find its area to the nearest whole number.the population of a city has increased by 27% since it was last measured. if the current population is 50800 what is the previous population the quotient of a number and 5 is 9 25% of what number is 7