Answer:
it takes 8 mins.
the robot can complete about 7 task in one hour.
Step-by-step explanation:
8
3(4)+(5)(4)-2(12)
then solve
12+20-24=8
1/35
-3/7 / -15/1 =
3/7 * 1/15 =
3 / 105 =
C,DB
It will take 30 minutes!
Hope this helps! :D