Alumbar truck travels 60 miles each way from a sawmill to a lumber camp and then back in 7 hours. if the truck averages 5mph less on the return trip than on the trip to the camp, find its average speed to the camp

13.6 mph

Step-by-step explanation:

The truck travels 60 miles to and back. We know the truck took 7 hours on the journey back of 60 miles. This means it’s average speed over this time was 60/7 = 8.6 miles per hour.

It averages 5mph less on its return trip. This means on the way to the camp it goes 5mph faster so 8.6+5=13.6 mph on its trip to the camp.

answer: 20

step-by-step explanation:

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.