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This problem trains for: SAT-I, AMC-8, GMAT, AMC-10.

Five robots gone on a drinking binge consume 100 cans of Greasola in 15 hours. How many hours would three robots from the next year's model, who are able to drink Greasola 25% faster, take to drink the same total amount?

One robot of the older model can drink 20 cans in 15 hours. The new model can drink 25% more, which means it drinks 25 cans in 15 hours. Three new robots can drink 75 cans in 15 hours. How many hours does it take them to drink the contents of 100 cans?