<human>:  John buys 3 different coolers. The first one is 100 liters. The second is 50% bigger than that and the third is half the size of the second. How much total water can they hold?
<bot>: How big is the second cooler? ** The second cooler is 100*.5=<<100*.5=50>>50 liters bigger than the first
How big is the second cooler? ** So it is 100+50=<<100+50=150>>150 liters
How big is the third cooler? ** The third is 150/2=<<150/2=75>>75 liters
How much total water can they hold? ** So the total water they can hold is 100+150+75=<<100+150+75=325>>325 liters
#### 325