Question

If a hummingbird's wings beat at 12 inches per second then how long will it take them to move 6 feet?

Answer 1

Step One

Convert 6 feet to inches

1 foot = 12 inches.

6 feet = x inches           Cross multiply

1*x = 6 * 12

x = 72 inches

Step Two

Find out how long it will take to get the bird's wings to move a distance of 72 inches.

1 second = 12 inches.

x seconds = 72 inches          Cross multiply

12*x = 1 * 72

12x = 72                                  Divide by 12

x = 72/12

x = 6

Solution

It will take all of 6 seconds for the hummingbird to get their wings moving to 6 feet.  

Answer 2

It will take them 72 seconds to move 6 feet.

12 inches = 1 foot

12 x 6 = 6 feet

6 feet = 72 inches