abdul purchases two pairs of goggles priced the same, as well as a bottle of sun screen. The sunscreen was $12 and represents 30% of the total. How much is the purchase total?

$40

Step-by-step explanation:

We can call the total x.

30% = 3/10, so $12 = 3/10 of the total.

This means that 12 = 3/10 of x, or  12 = 3/10 * x.

Solving,

12 = 3/10 * x

multiply both sides by 10 to get rid of the fraction

120 = 3 * x

divide both sides by 3 to get x, the total, by itself

40 = x

This means that the total is $40.

Step-by-step explanation:

Let the total be x

Total is $40

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.

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.