Iris is making hats for the members of the school marching band. she can make 3 hats in one and a half hours. she wants to know many hats she makes in 1 hour

She can make 2 hats.

Since she can make 3 hats in 1.5 hours, divide 1.5 by 3 to find the unit amount of hats she can make.

1.5/3=.5

.5 of an hour is 30 mins.

Now, multiply 30 mins by 2 to find the amount of time it would take to make 2 hats.

30*2=60 or 1 hour.

She can make 2 hats in an hour.

Hope this helps!

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls