Carmen can paint 4 flower pots in 1.5 hours. If she continues to paint at the same rate, which of the following is true?

a. 8 hours to paint 6 flower pots
b. 4.5 hours to paint 7 flower pots
c. 2.5 hours to paint 5 flower pots
d. 3 hours to paint 8 flower pots

b. 4.5 hours to paint 7 flower pots

Explanation: If Carmen can paint 4 flower pots in 1.5 hours, then she can paint 1 flower pot in 1.5/4 = 0.375 hours. To find out how long it would take her to paint 7 flower pots, we multiply 7 by 0.375, which equals 2.625 hours or 4.5 hours.