a cell phone company sold 4,000 cell phones in the month of November. In December, the company held its annual sale and sold 22
percent more cell phones than it did in November. In January , the company experienced its slowest month , managing to sell only 50 percent of the number of cell phones sold during the month of December. What is the total number of cell phones sold by the company during the three months combined ?
78×4000=312000 100×x=100x 312000÷100=3120 3120+4000=7120<----2nd month 7120×0.5=3560<----3rd month 4000<----1st month 4000+3560+7120=14680<----Your answer, this is the total of the three months.