Answer:
8
Step-by-step explanation:
From 5 to get to 20 it would be (X4), so we would do the same for the 2, and 2 times 4 would be 8. The answer is 8.
3.125 , we can write it as
3 125/1000
3 1/8
25/8
x= y/m-6/m
40%
4/10 = 40/100
40/100 as a percentage is 40%