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A girl is half the age of her mother. Mother is 5yrs less than father and the sum of the 3 ages is 100 find each age

kates  Aug 9, 2017

Best Answer 

 #1
avatar+349 
+4

x = girl's age

2x = mom's age

2x + 5 = father's age

 

\(x + 2x+2x+5=100\)

\(5x+5=100\)

\(5x=95\)

\(x = 19\)

 

The girl's age is 19, the mother's age is 19*2 or 38, and the father's age is 38+5 or 43.

 

CHECK: 19 + 38 + 43 = 100?

               100 = 100

Mathhemathh  Aug 9, 2017
 #1
avatar+349 
+4
Best Answer

x = girl's age

2x = mom's age

2x + 5 = father's age

 

\(x + 2x+2x+5=100\)

\(5x+5=100\)

\(5x=95\)

\(x = 19\)

 

The girl's age is 19, the mother's age is 19*2 or 38, and the father's age is 38+5 or 43.

 

CHECK: 19 + 38 + 43 = 100?

               100 = 100

Mathhemathh  Aug 9, 2017

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