James buys 3 CDs. Two of them are 1.5 hours each. The last one is twice that long. What is the combined length of the CDs?
Let’s work this out in a step by step way to be sure we have the right answer.
6
The long CD is 1.

5 * 2 = 3 hours.

The two shorter CDs have a combined length of 1.

5 * 2 = 3 hours.

So in total the CDs had a length of 3 + 3 = 6 hours.

.

Therefore, the answer is 6