SOLUTION: mark is five times older than his sister.if the sum of their ages three years ago is twenty seven. how old is mark
Algebra.Com
Question 758936: mark is five times older than his sister.if the sum of their ages three years ago is twenty seven. how old is mark
Answer by Menjax(62) (Show Source): You can put this solution on YOUR website!
Let m be marks current age
Let s be his sisters current age
m=5s #1
(m-3) + (s-3) = 27 #2
From 1
5s-3+s-3=27
6s=33
s=11/2
m=55/2
RELATED QUESTIONS
Leo is three times older than Mark. If the sum of their ages is 32, then how old is... (answered by itxmenaved,ikleyn)
Mark is 11 years older than twice Paul's age. Five years ago, the sum of their ages was... (answered by richwmiller)
Mark is 4 years older than Kate. Together the sum of their ages is three times Kate's... (answered by ankor@dixie-net.com)
Kevin is now four times as old as mark. Five years ago,
The sum of their ages was 45.... (answered by MathLover1,MathTherapy)
Kim's sister is five years older than three times kims age. The sum of their ages is 13.... (answered by erica65404)
marks mother is 32 years older than mark. the sum of their ages is 66. how old is... (answered by Cromlix)
Jason is 6 years older than his sister. Their mother is years older than the sum of their (answered by mxgirl22)
a boy is five years older than his sister. if the sum of their ages is 31. how old is... (answered by stanbon,Kalmetam)
Adam is 12 years older than his sister Emily. The sum of their ages is three times... (answered by josgarithmetic)