Given condition is:
A sloth moves in one hour = 

So, a sloth moves in one hour = 
Hence, in 60 minutes a sloth moves = 400
In 1 minute sloth will move = 
In 90 minutes it will move = 
The answer is 600 units.
Answer:
90
Step-by-step explanation:
90 degree angles are angles with a 90 degree turn
Ok so
1/4 of total eaten
3/4 left
3/5 of 3/4 eaten
9/20 left
18=9/20 of whole
multiply both sides by 20
360=9 of whole
divide both sides by 9
40=whole
40 total originlly