Convert from ml per day to ft per minute using the following dimensional analysis:500 𝑚l1 𝑑𝑎𝑦×5,280 𝑓𝑒𝑒𝑡1 𝑚𝑖𝑙𝑒×1 𝑑𝑎𝑦24 ℎ𝑜𝑢𝑟𝑠×1 ℎ𝑜𝑢𝑟60 𝑚𝑖𝑛

Question

To get the result, the student entered 500 x 5,280 24 x 60 on the calculator. Explain the student's mistake.

Answer 1

500 m/day x 5280 ft/m x 1 day/24 hours x 1 hour/60 min =

= 2640000 ft/1440 min= 1833.33 ft/min

the students mistake is highlighted by bold face type