Joey has 30 pages to read for history class tonight. He decided in which he would take a break while he finished reading 70% of the pages assigned. How many pages must he read before he takes a break?
To ?nd 70% of 30, you must multiply 30 through the decimal equivalent of 70% (0.70); 30 × 0.70 = 21. If you chose c, you computed how many pages he has left to read after his break.