since a class of 100 has 50 girls; 22% of girls is 11, \(9 \times 11 \sim 100\)
A man has 3 jackets, 10 shirts, and 5 pairs of slacks. If an outfit consists of a jacket, a shirt, and pair of slacks, how many different outfits can the man make?
Shirley borrows \(\ $4,000\) for five years to make improvements to her home workout room. If the simple interest rate is 16%, how much will she pay in interest?
Roy bought \(\$34.15\) worth of materials at the hardware store. A sales tax of 6 percent was added on. What was the final cost?