Question 1099284
<br>Tutor ikleyn's solution uses the method usually taught for solving problems like this, using the fractions of the job each worker does in a fixed unit of time.<br>
If you are one of a large number of people who dislike fractions, here is an alternative method for solving this problem.<br>
Consider the least common multiple of the two given times -- it is 60 minutes.
In 60 minutes, John could dig 2 of those gardens, and Jack could dig 3 of them.
So together in 60 minutes the two of them could dig 5 of them.
So the amount of time it would take them together to dig the one garden is 60/5 = 12 minutes.