Answer:
I think it would take 6 minutes to reach temperature below 8 °C
400 lbs = 0.2 tons
38,600 mg = 3.86 dekagrams
Hope it helps!
Marked(10)/total = 3/20 (from sample)
total/10 = 20/3 (inverting the above proportion)
total = 10•20/3 = 200/3 ≈ 67
Commutative Property of Addition