Q: Max fills up water balloons for 30 minutes at a rate of 2 water balloons every minute. Max’s friend Zach fills up water balloons for 40 minutes at a rate of 3 water balloons every minute. In the process, 10 of the water balloons pop on the ground. How many filled water balloons do Max and Zach have in total?
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A: Max fills 30 * 2 = <<30*2=60>>60 water balloons
Zach fills 40 * 3 = <<40*3=120>>120 water balloons
Max and Zach have a total of 60 + 120 - 10 = <<60+120-10=170>>170 water balloons The answer is  170.
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