SOLUTION: John is three times as old as Mary and the sum of their ages is 24. find their ages
Algebra.Com
Question 613901: John is three times as old as Mary and the sum of their ages is 24. find their ages
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
John is three times as old as Mary and the sum of their ages is 24. find their ages
---
Equations:
j = 3*m
j+m = 24
----
xubstitute for "j" and solve for "m":
3m + m = 24
4m= 24
Mary = 6 years
----
solve for "j":
j = 3m
John = 3*6
John = 18 years
====================
cheers,
Stan H.
RELATED QUESTIONS
don is three times as old as david and the sum of their ages is 52. find their... (answered by ReadingBoosters)
Don's three times as old as David and the sum of their ages is 60. Find their... (answered by macston)
Mary is twice as old as Susan and three years older than John. The sum of their
ages is... (answered by drk)
John is twice as as old as mary.If sum of sqeare of their ages is 125,find mary... (answered by Fombitz)
John is 3 times as old as Ken. Three years ago, he is four times as old as Joy. Find the... (answered by josgarithmetic,ikleyn)
Mary is four times as old as John. The difference of their ages is 42. How old is... (answered by ewatrrr,edjones)
John is three times as old as his son jack, and the sum of their ages is 48, how old is... (answered by amarjeeth123)
Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their... (answered by Alan3354)
Pete is twice as old as Mary. 7 years ago the sum of their ages was 31. Find their ages
(answered by josmiceli)