Don’t press links please it’s a scam
Answer is 5 hours
Explained
I divided 17,700 by 60 seconds to get minutes
Then I divided by 60 minutes to get hours
4.916 hours rounded to 5 hours
Assuming its the same temp, use this equation for pounds and minutes then solve:

cross multiply
50(3.5) = 175 minutes
it'll take an 2 hours 55 minutes
D = {x|x is a whole number}
E = {4}
F = {2, 4, 6, 8}
D ∩ F = {2, 4, 6, 8}