![It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it take X and Y](https://www.gkseries.com/blog/wp-content/uploads/thumbs_dir/It-takes-two-hours-for-a-person-X-to-mow-the-lawn.-Y-can-mow-the-same-lawn-in-four-hours.-How-long-in-minutes-will-it-take-X-and-Y-qagii8pmybhv6xa15m9gsm3mzhjtu9up84fipj7dls.jpg)
Q. It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it take X and Y, if they work together to mow the lawn? (A) 60 (B) 80 (C) 90 (D) 120 Ans: 80 Solution: Work done by X in 1 hour=1/2 Work done by Y in 1 ...
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