Question

Snow mountain has a snow-machine that will lay down on inch of snow per hour over an area of 40,000 square feet. Which expression shows how to find the number of hours this machine take to lay down linch of new snow on a ski run that is 800 feet long and 150 feet wide?

• A. $\frac{800\times 150}{40,000}$
• B. $\frac{40,000}{800\times 150}$
• C. $\frac{150\times 40,000}{800}$
• D. $\frac{800\times 40,000}{150}$

Answer 1

The correct option is A $\frac{800\times 150}{40,000}$

One hour is taken to lay down area of $40000$ sq ft
Area to be laid down = $800\times 150$
Thus, time taken to lay down this area = $\frac{800\times 150}{40000}$ hours