Answer:
the train will travel 245 feet in 3 and 1/2 seconds
Explanation:
To determine the distance the train will travel in 3 and 1/2 seconds, we can use a proportion based on the given information.
Let's set up the proportion:
70 feet / (1/10 second) = x feet / (3 1/2 seconds)
To solve this proportion, we can first convert the mixed number 3 1/2 to an improper fraction.
3 1/2 = 7/2
Now we can rewrite the proportion:
70 / (1/10) = x / (7/2)
To simplify the proportion, we can multiply the numerator and denominator of the right side by 10/1:
70 / (1/10) = (x * 10) / (7/2)
Simplifying further, we get:
70 * (10/1) = x * (10/7/2)
700 = x * (20/7)
To find x, we can divide both sides of the equation by (20/7):
x = 700 / (20/7)
x = 700 * (7/20)
x = 245 feet
Therefore, at the same speed, the train will travel 245 feet in 3 and 1/2 seconds.