Question

a school purchased 9 gallons of blue paint to decorate several of its classrooms.if each classroom needs 3/4 of a gallon of paint, then how many classrooms will get painted?

Answer 1

Answer: To find the number of classrooms that will get painted, we can divide the total amount of blue paint purchased by the amount of paint needed for each classroom.

Total amount of blue paint purchased = 9 gallons

Amount of paint needed for each classroom = 3/4 gallon

Number of classrooms = Total amount of blue paint purchased ÷ Amount of paint needed for each classroom

Number of classrooms = 9 gallons ÷ (3/4) gallon

To divide by a fraction, we multiply by its reciprocal:

Number of classrooms = 9 gallons * (4/3) gallon

Now, multiply the numerators and denominators:

Number of classrooms = (9 * 4) / 3

Number of classrooms = 36 / 3

Number of classrooms = 12

So, 12 classrooms will get painted with the 9 gallons of blue paint purchased.