The answer would be 198/300. That simplified would be 33/50. If you want a percent, it would be 66%.
1 is N
2is F
3isN
4usF
5isF
6isF
7isF
Step-by-step explanation:
the problem description is incomplete or wrongly copied.
we don't know the thickness of the boards, and we cannot understand what we need to calculate, and what the answer options are.
5 hours because 800/25=32
32= 2^5
25 X 1 = 25
25 X 2 = 50 AFTER FIRST HOUR
25 X 2^5 = 800 AFTER FIFTH HOUR