You could use a proportion.
Cross multiply and solve for x.
10/(1/5) = x/20
If a dog can run 10ft in1/5 of a second how many feet can it run in 20 seconds
2 answers
10 / ( 1 / 5 ) = 50
50 ft / s
50 * 20 = 1,000 ft
50 ft / s
50 * 20 = 1,000 ft
1 answer