Question
PSLE
Riordan has thrice as many 10-cent coins as 50-cent coins. If he has $12.80 in total, how many 10-cent coins does Riordan have?
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PSLE
Riordan has thrice as many 10-cent coins as 50-cent coins. If he has $12.80 in total, how many 10-cent coins does Riordan have?