27. Kelsey and her 4 sisters spent an equal amount of time cleaning their home. Their parents added their times. They found that each of the 5 girls spent 3 hours cleaning. Let c be the total number of hours the girls spent cleaning. Write and solve a division equation to find the total number of hours the girfs spent cleaning.

Kelsey and her four sisters spent 3 hours each cleaning, making it a collective effort. To find the total number of hours they spent cleaning, you can take the number of girls (5) and multiply it by the time each spent (3 hours). So, the equation would be: \( c = 5 \times 3 \). Solving this, you find that \( c = 15 \) hours. In a division format, if you were to find the total by dividing the total time by the number of girls, you could express it as: \( c \div 5 = 3 \), which also reinforces that the total time spent cleaning is indeed 15 hours!