You will have 40 minutes before it it’s 100% loaded
Slot method or permutations
top 3
6 for first slot
5 for 2nd slot
4 for 3rd
6*5*4=120
120 possiblites
answer is C
All the numbers are tilted at a 90 degree angle, except for the number 4 which it tilted at an angle of 89 degrees, hoped this helps
You would do 20 • 3=60 and the you would add 20 • 1/5=4 so, your total is 64in.
I have a pic. I'll message you