Answer:
i don't know if it is correct or not, sorry if i were mistaken
Jack was planting a tree. He was to dig a hole that was 3 feet deep for every 5 feet of tree height. How deep should he dig the hole for a tree that is 17feet high.
Calculations
Cross multiplication

=
5x = 2 x 13
Divide by 5 to isolate x

=
x = 10.2
Answer = 10.2
If x orignial price than 60/100*x=80/100*(x-40) and selling price =60/100*x=96
Answer:
1 3/20
Explanation:
Find the lowest common denominator of both fractions, which is 20.
2/5 = x/20. Find the value of x and that is 8.
3/4 = y/20. Find the value of y and that is 15
Add 8/20 and 15/20 and that gives you 23/20. This is an improper fraction so divide 23 by 20, which is 1 3/20