SOLUTION: Rachel piggy bank consists of P10 and P5 coins only. If there are 75 coins worth P450.How coins are there in the piggy bank?
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Question 957149: Rachel piggy bank consists of P10 and P5 coins only. If there are 75 coins worth P450.How coins are there in the piggy bank?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
- number of P10 coins
- number of P5 coins
.
.
.
Multiply first equation by 10 and subtract from second equation.
Then,
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