SOLUTION: Carol is 15 years older than her sister amanda.Mike is two times as old as amanda.the sum of their ages is 35. How old is carol?
My atempt was: amanda;a+15=35
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Question 829765: Carol is 15 years older than her sister amanda.Mike is two times as old as amanda.the sum of their ages is 35. How old is carol?
My atempt was: amanda;a+15=35
carol;a
mike;2a
then i subtracted 15 from 35 and got 20=3a because i added amanda,mike and carol's a. im stuck after here i dont know what to do.
Found 2 solutions by KMST, MathLover1:
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
= Amanda's age
= Carol's age (because Carol is 15 years older than Amanda)
= Mike's age (because Mike is two times as old as Amanda)
The equation to solve is
Solving:
, so
Carol is years old.
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
Carol is years than her sister Amanda;
......eq.1
Mike is two times as old as Amanda.
............eq.2
the sum of their ages is :
.............eq.3....substitute from eq.1 and from eq.2
.............solve for
How old is carol? go to ......eq.1 plug in
and go to ............eq.2 plug in
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