###Human: Lake Crystal has twenty percent fewer frogs than Lassie Lake. If Lassie Lake has forty-five frogs, how many frogs are there in total in the two lakes?, ### Assistant: Lake Crystal has twenty percent fewer frogs than Lassie Lake, a total of 20/100*45=9 frogs
The total number of frogs in Lake Crystal is 45-9=36
Together, the two lakes have 36+45=81 frogs 
 So the answer is :  81