<human>:  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?
<bot>: How many water balloons does Max fill? ** Max fills 30 * 2 = <<30*2=60>>60 water balloons
How many water balloons does Zach fill? ** Zach fills 40 * 3 = <<40*3=120>>120 water balloons
How many filled water balloons do Max and Zach have in total? ** Max and Zach have a total of 60 + 120 - 10 = <<60+120-10=170>>170 water balloons
#### 170