Jill, Grace, and Billy shared pennies in the ratio 2 : 4 : 4. They had a total of 120 pennies in all.
How many pennies did Jill receive?
and
A rope is cut into three pieces marked A, B, and C. The length of the pieces are in the ratio 4 : 6 : 8. The rope is 36 feet long.
What is the length of A?