Are you trying to combine? The answer would be 84.
Answer:
1 kilometer for every 10 minutes.
Step-by-step explanation:
Divide 30/3 to get your ratio
3a= 3(5) = 15
15 - - 3 = 15+3 = 18
18/6 = 3
b + a = 5 + -3 = -3 + 5 = 2
3 x 2 = 6
I got 16,000 tubes are sold in half a day because there are 720 minutes in 12 hours, and 43,200 seconds in 720 minutes then you divide by 2.7 and get 16,000