SOLUTION: if a girl is half the age of mom and her mom is five years younger than her dad. The sum of their ages is one hundred. How old is the girl
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-> SOLUTION: if a girl is half the age of mom and her mom is five years younger than her dad. The sum of their ages is one hundred. How old is the girl
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You can put this solution on YOUR website! g = girl's present age
m = Mom's age\
d = Dad's age
:
Write an equation for each statement
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if a girl is half the age of mom
g = .5m
and her mom is five years younger than her dad.
d = m + 5
The sum of their ages is one hundred.
g + m + d = 100
Find Mom's age first, substitute .5m for g; and (m+5) for d
.5m + m + (m+5) = 100
2.5m = 100 - 5
m = 95/2.5
m = 38 yrs old is Mom
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How old is the girl
g = .5m
g = .5(38)
g = 19 yrs
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Check this find the sum of their ages (dad is 43, 5 yrs old than Mom)
19 + 38 + 43 = 100
