Question

Ben and Kevin can paint a hall in 12 days and 10 days respectively. They work together for 3 days after which Ben had to leave and Kevin had to work alone. Find the number of days taken by Kevin to complete the remaining work.​

Answer 1

Answer:

It's often easier to do these "work" word problems when you're going through the chapter, section by section, in the textbook. They'll cover a particular technique in a given section, and then ask only those types of questions in that section's homework. Then, in the next section, they'll cover another technique and you'll do exercises that use only that method. Then, when you get to the chapter review (or the next test), the questions aren't grouped according to the method that works best. And everything falls apart.

But all of these exercises have some basic commonalities. And, if you work logically and clearly, you can usually think your way to the answer.