Question

I’m Mrs.Hu’s classroom, 4/5 of the students have a dog as a pet. Of the students have a dog as a pet,2/3 also have a cat as a pet. If there are 45 students in her class,how many have both a dog and a cat as a pet?

Answer 1

Hello!

ANSWER:

36 students have a dog as a pet, and 30 students have a cat as a pet.

EXPLANATION:

Let's quickly convert these fractions to decimals by dividing their numerators by their denominators.

4 ÷ 5 = 0.8

2 ÷ 3 = 0.6666666667

Now, multiply the decimal forms by the number of students in Mrs. Hu's class.

0.8 × 45 = 36

0.(6)7 × 45 = 30