20 students play football and 16 students play hockey. It is found that 10 students play both games. Find the number of students playing at least one game ​

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

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