Abigail can mow a particular lawn in 6 hours, but Bob can do it in only 4 hours. If Abigail and Bob work together, how many minutes would it take them to mow the lawn?
+2094 Abigail in 1 hour: 1/6 of the lawn
Bob in 1 hour: 1/4 of the lawn
Together in 1 hour: 1/6 + 1/4 = 5/12 of the lawn
They will mow the lawn in 12/5 hours, or 12*12=144 minutes
