Question
PSLE
Carl had 13 more one-dollar notes than ten-dollar notes at first. He exchanged $180 worth of ten-dollar notes for one-dollar notes. How many less ten-dollar notes than one-dollar notes did Carl have after the exchange?
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PSLE
Carl had 13 more one-dollar notes than ten-dollar notes at first. He exchanged $180 worth of ten-dollar notes for one-dollar notes. How many less ten-dollar notes than one-dollar notes did Carl have after the exchange?