SOLUTION: William shared his baseball card collection with his friends. He gave 25% to Tom, 1/6 to Hal, and .05 to Joe. If William originally had 60 cards in his collection, how many cards d

Question 135875: William shared his baseball card collection with his friends. He gave 25% to Tom, 1/6 to Hal, and .05 to Joe. If William originally had 60 cards in his collection, how many cards did he have left after sharing with his 3 friends?
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
Let x=number of cards that William had left
25% or 1/4 to Tom
1/6 to Hal
0.05 or 5/100 or 1/20 to Joe
Willam gave away 1/4 + 1/6 + 1/20 the LCM is 60, so:
15/60 + 10/60 + 3/60= 28/60=14/30=7/15 of his cards meaning he has 8/15 of his cards left, so our equation to solve is:
(8/15)*60=x
x=32 ----------------------The number of cards that William had left
CK
(1/4)*60+ (1/6)*60 (1/20)*60+32=60
15 + 10 + 3 + 32=60
60=60

Hope this helps---ptaylor
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