Civil Service Exam Reviewer · Word Problems · medium
A piggy bank has 37 coins consisting of ₱5 and ₱10 coins, worth ₱330 in all. How many ₱10 coins are there?
- 8
- 33
- 22
- 29
Answer
D. 29
Solution
Let x = ₱10 coins: 10x + 5(37 − x) = 330 → 5x = 145 → x = 29.
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