A train travels 20 feet in 1/5 second. At this same speed, how many feet will it travel in

three seconds? ___________

15 * 20 = ?

To find out how many feet the train will travel in three seconds, we need to determine the distance the train travels in 1 second and then multiply it by 3.

Given that the train travels 20 feet in 1/5 second, we can calculate the distance it travels in 1 second by dividing 20 by 1/5:

20 feet / (1/5 second) = (20 feet) * (5 seconds) = 100 feet

Therefore, the train will travel 100 feet in 1 second.

To find the distance the train will travel in three seconds, we multiply 100 feet by 3:

100 feet * 3 = 300 feet

Therefore, the train will travel 300 feet in three seconds.

To find out how many feet the train will travel in three seconds, we can use the concept of proportionality.

First, let's set up a ratio to represent the train's speed. We know that in 1/5 second, the train travels 20 feet. So, the ratio becomes:

(20 feet) / (1/5 second)

To find out how many feet the train will travel in three seconds, we can set up a proportion using the ratio:

(20 feet) / (1/5 second) = (x feet) / (3 seconds)

To solve for x, we can cross-multiply and solve for x:

20 feet * 3 seconds = 1/5 second * x feet

60 feet = (1/5 second) * x feet

To isolate x, we can multiply both sides of the equation by the reciprocal of (1/5 second), which is 5 seconds:

60 feet * 5 seconds = x feet

300 feet = x

Therefore, the train will travel 300 feet in three seconds.