Answer:
5 tasks = 2/3 hour.
1 task = 2/3 hour /5 = 2/15 hour.
How many tasks can the robot complete in one hour?
1 hour / (2/15 hour/task) = 15/2 tasks = 7.5 tasks.
Answer:
Ans =C(4,1),(-4,1),(4,6),(-4,6)
25 kids in all
2xboys:3x girls
so the equation would be
2x+3x=25
solve,
5x=25
/5 /5
x=5
2x=10
3x=15
10 boys and 15 girls