Answer:
X=9 and Y=8
Step-by-step explanation:
In relation BC is only 1 unit more than EF. So following that take AC=10, then subtract 1. Get X=9. Then take DE=7 and add 1. Get Y=8
b = 8
Look at picture.
top right
c:
3 I think is tree :) 3::::::::D
Answer:6 hours
3x2=6