Question
PSLE
Riordan had 41 more buttons than Ahmad at first. Ahmad gave 20 of his buttons to Riordan. Riordan now has 4 times as many buttons as Ahmad. How many buttons did Ahmad have at first?
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PSLE
Riordan had 41 more buttons than Ahmad at first. Ahmad gave 20 of his buttons to Riordan. Riordan now has 4 times as many buttons as Ahmad. How many buttons did Ahmad have at first?