Reyna's house is 10.5 miles due west of the school. Shaquille's house is 14 miles due north of the school. Reyna drives to Shaquille's house every morning along a road that runs directly between their houses. Then they drive to school together. How much shorter would Reyna's journey be if she went straight to school instead of stopping at Shaquille's house on the way?

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

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