The manufacturing cost of a cell phone was $136. sellers first marked up the cost by 25 percent. sales were poor, so sellers decreased the markup to 17 percent. calculate the old and new selling prices. selling price = original cost + markup value

Old selling price is $170 and new selling price is $159.12

Step-by-step explanation:

Given Cost Price , CP=$136

For old selling price

Selling Price(SP) = Cost Price(CP) + Markup Value(MV)

Now MV=

=>SP = $136+$34=$170

Thus old selling price is $170

For new selling price

New Markup Value(NMV) =

=>New Selling Price , NSP= $136+$23.12=$159.12

Thus new selling price is $159.12

Old selling price is $170 and new selling price is $159.12

Step-by-step explanation:

Given Cost Price , CP=$136

For old selling price

Selling Price(SP) = Cost Price(CP) + Markup Value(MV)

Now MV=

=>SP = $136+$34=$170

Thus old selling price is $170

For new selling price

New Markup Value(NMV) =

=>New Selling Price , NSP= $136+$23.12=$159.12

Thus new selling price is $159.12

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.

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