400
Mr. Tune took a vacation to Neptune. His vacation lasted for 144 hours. A day on Neptune lasts for 16 hours. Which equation AND solution shows how many days Mr. Tune's vacation lasted?
A. 16d= 144; d= 9
B. d = 16 X 144; d= 2,304
C. 16 + d= 144; d= 128
D. d= 16 + 144; d= 160
A. 16d= 144; d= 9
Explanation:
16d means multiply (when there is no operation, we multiply)
We can divide 144 hours (total time spent) by 16 hours (total # of hours in a Neptune day) and we will get 9.
16 X 9 = 144