Question
PSLE
Peter had 13 more two-dollar notes than ten-dollar notes at first. He exchanged $60 worth of ten-dollar notes for two-dollar notes. How many more two-dollar notes than ten-dollar notes did Peter have after the exchange?
2 m

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PSLE
Peter had 13 more two-dollar notes than ten-dollar notes at first. He exchanged $60 worth of ten-dollar notes for two-dollar notes. How many more two-dollar notes than ten-dollar notes did Peter have after the exchange?