Grass garden

Mr. Grass would mow the garden for 5 hours, and his son Michael could do it for 7 hours. They agreed to wake up at 5 AM and begin to mow together. Ms. Grass needs to drive into town at 8:30. Michael says that at that time, they're done with work. Is he right?

Result

x=




Step-by-step explanation:

h=51+71=357+355=357+5=35120.3429 t h = 1 t=1/h=1/0.3429=1235=212112.9167 h  t < 8.50  5.00 2.916667 < 3.50 x=1



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