SOLUTION: The difference of Ron's age and Joan's ages is 8 years. The sum of twice Ron's age and 3 times Joan's age is 66. How old is each.
Algebra.Com
Question 386767: The difference of Ron's age and Joan's ages is 8 years. The sum of twice Ron's age and 3 times Joan's age is 66. How old is each.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
The difference of Ron's age and Joan's ages is 8 years. The sum of twice Ron's age and 3 times Joan's age is 66. How old is each.
..
Ron's age =r
Joan's age =j
..
r-j=8...................1
2r+3j=66................2
..
multiply 1 by 3
3r-3j=24
add this to (2)
2r+3r+3j-3j=24+66
5r=90
/5
r=14 -----ron's age
Joan's age =6
...
m.ananth@hotmail.ca
RELATED QUESTIONS
The difference in Ron's age and Joan's age is 9 years. In 3 years, Ron will be twice as... (answered by josgarithmetic)
The difference in Ron’s age and Joan’s age is 9 years. In 3 years, Ron will be twice... (answered by ikleyn,josgarithmetic)
Mar is 4 years older than Ron. Chan is twice as old as Mar. The sum of
their 3 ages is 8 (answered by josgarithmetic,ikleyn)
Mary is the younger than her sister Joan. The sum of their age is 15. Twice Joan’s age... (answered by marcsam823)
Mary is the younger than her sister Joan. The sum of their age is 15. Twice Joan’s age... (answered by checkley77)
The difference in Ron's age and Joan's age is 9 years. In 3 years, Ron will be twice as... (answered by josgarithmetic,Edwin McCravy)
John and Joan have been Married for exactly 37 years. Joan is four years older than John. (answered by richwmiller,ikleyn)
Ron’s age is 2.5 times the sum of Billy and Matt’s age. Ron is 35 years old, and... (answered by stanbon,josgarithmetic,ikleyn)
Joan 3 times as old as her sister. In 3 years, she will be two more than twice the age of (answered by greenestamps,josgarithmetic,solver91311)
Sue and Joan are sisters. Joan is 7yrs. older than sue. In 3 yrs. joan’s age will be... (answered by Alan3354)