SOLUTION: Phil had 93 dollars, and his sister owed 10 dollars to her friend. How much should Phil give to his sister for each of them to have the same amount after she paid her debt?

Algebra ->  Average -> SOLUTION: Phil had 93 dollars, and his sister owed 10 dollars to her friend. How much should Phil give to his sister for each of them to have the same amount after she paid her debt?      Log On


   

Question 1114642: Phil had 93 dollars, and his sister owed 10 dollars to her friend. How much should Phil give to his sister for each of them to have the same amount after she paid her debt?
Found 2 solutions by josmiceli, greenestamps:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = amount he should give sister
+x+-+10+ = amount that his sister ended up
with after she paid $10 to friend
-----------------------------------
given:
+93+-+x+=+x+-+10+
+2x+=+103+
+x+=+51.5+
Phil should give his sister $51.50
------------------------------------
check:
+93+-+51.5+=+51.5+-+10+
+41.5=+41.5+
OK

Answer by greenestamps(13216) About Me  (Show Source):
You can put this solution on YOUR website!


$10 of the $93 is going to his sister's friend; that leaves $83 for Phil and his sister.
If they are to finish with the same amount, then each should have $83/2 = $41.50.
So Phil should keep $41.50; the amount he should give his sister is $93-$41.50 = $51.50.