Question

A log with a radius of 2.5 feet is rolled up a hill. If it takes 30 seconds to roll the log one complete revolution, approximately how many minutes will it take to roll the log 75 yards? [3 feet = 1 yard] 5 7 10 12 15

Answer 1

Answer: 45minutes

Explanation:

Since it takes 30seconds to roll a log of 2.5feets up the hill, it will take 25×225/2.5 seconds to roll a log of 225feets(75yards).

*Note that

3feets= 1yard

xfeets = 75yards

x = 75 × 3

x = 225feets

2.5feets = 30seconds

225feets = y

y = 225×30/2.5

y = 2700seconds

It will take 2700 seconds (45minutes) to roll up 75yards(225feets) of log