Question 1134198
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Since Tom takes 3 times as long as Jim if they work alone, Jim works 3 times as fast as Tom.<br>
So in working together, Jim does 3/4 of the work and Tom does 1/4 of it.<br>
That means Jim does 3/4 of the work in 3 hours; 3/4 of the job in 3 hours means he needs another hour to do the other 1/4 of the job.<br>
ANSWER: It takes Jim working alone 3+1=4 hours to weed the garden.