Answer:
Question 1:
You would need 4 cups of milk, and 12 tablespoons of chocolate powder for 4 glasses of chocolate milk.
If your brother made his chocolate milk using 2 cups of milk and 3 tablespoons of chocolate powder, his drink would be less chocolatey than yours.
Question 2:
The ratio to boys and girls in the classroom is 15/10 or 10/15
Question 3:
It takes Joshua 6 minutes and 40 seconds to run 1 mile,
It takes Joshua 33 minutes and 20 seconds to run 5 miles
And it takes Joshua 16 minutes and 40 seconds to run 2.5 miles.
;)