標題:
Inequalities question
發問:
There are 30 $1 and $2 coins in total in a bag. If the total value of the coins is less than $36, at most how many $2 coins are there in the bag? Let x be the number of $2 coins, then_______is the number of $1 coins.
最佳解答:
Let x be the number of $2 coins, then (30 - x) is the number of $1 coins. 2x + (30 - x)
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