SOLUTION: q's age is 80% of R's age. five years from now Q's age will be 90% of R's age. how old is each now?
Algebra.Com
Question 725440: q's age is 80% of R's age. five years from now Q's age will be 90% of R's age. how old is each now?
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
q = 8r/10
q + 5 = 9(r + 5)/10
Substitute the first equation into the second.
8r/10 + 5 = 9r/10 + 4.5
0.5 = r/10
r = 5 ---> q = 4
Q is 4 and R is 5.
RELATED QUESTIONS
Mrs. A has four children, namely, P, Q, R, and S. Q is currently twice the age of S.... (answered by ankor@dixie-net.com)
the sum of luisa's age and lily's age is 20. Luisa's age one year from now will be nine... (answered by josgarithmetic)
P years ago, a man’s age was (q+r)times that of his son who was then r years old.How... (answered by mananth)
At present John’s age is 30% of his father’s age. Twenty years from now, John’s age will... (answered by josgarithmetic)
Tommy’s age is 2/3 Ben’s age now. In 8 years time, the ratio of Tommy’s age to... (answered by math_tutor2020,mananth,josgarithmetic)
Peter’s age in five years will be thrice his age 7 years ago. How old is Peter... (answered by hamsanash1981@gmail.com)
's age is 7/10 onicolef joseph's age. In 4 years, nicole's age will be 8/11 of Joseph's... (answered by Cromlix)
40. Michael’s age is seven-tenths of Richard’s age. In four years Michael’s age will be... (answered by TimothyLamb,MathTherapy)
Judy age now is twice tom's age decreased by 10. In four years, the sum of Judy's age and (answered by josgarithmetic)