SOLUTION: Kris saved 20 coins from her allowance consisting of 25 cents and Php 1.00 coins.The number of Php 1.00 coins is z.How many of each denomination of coin did he have if the coins am

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Question 1062773: Kris saved 20 coins from her allowance consisting of 25 cents and Php 1.00 coins.The number of Php 1.00 coins is z.How many of each denomination of coin did he have if the coins amounted to Php 10.25?
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
z+0.25(20-z) = 10.25
z+5-0.25z = 10.25
0.75z = 5.25
z = 7 Kris has 7 Php 1 coins and:
20-7 = 13 coins Php 0.25