Physics, 07.12.2021 18:50 BaileyElizabethRay

Helen can write 15 postcards in one hour, while Kate can write 20 postcards. How much longer would Helen take to write 300
postcards than Kate?
__ hours

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More questions: Physics Another questions

Helen can write 15 postcards in one hour, while Kate can write 20 postcards. How much longer would Helen take to write 300 postcards than Kate? __ hours

Answers

Another question on Physics

Helen can write 15 postcards in one hour, while Kate can write 20 postcards. How much longer would Helen take to write 300
postcards than Kate?
__ hours