Working alone, Mary can pave a driveway in 5 hours and Hillary…

Working alone, Mary can pave a driveway in 5 hours and Hillary can pave the same driveway in 3 hours. When they work together, Mary thrives on teamwork so her rate increases by 10%, but Hillary becomes distracted and her rate decreases by 10%. If they both work together, how many hours will it take to pave the driveway?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #47842