Answer:
store 1 price after discount = $3.59
other store price after discount = $3.63
total price difference of 100 pens between store is $4
Step-by-step explanation:
given data
buy = 100 pens
discount at one store = 10 %
price = $3.99 per pen
discount at another store = 15%
price = $4.27 per pen
solution
we get here first discount at store one is
discount = pen price × discount rate .............1
discount = $3.99 × 10%
discount = $0.399
so price of pen at store 1
price of pen at store 1 after discount is
price after discount = $3.99 - $0.399
price after discount = $3.59
and
discount at other store is
discount = pen price × discount rate .............2
discount = $4.27 × 15%
discount = $0.64
so price of pen at other store
price of pen at other store after discount is
price after discount = $4.27 - $0.64
price after discount = $3.63
and
Price of 100 pens after discount at store 1 = $3.59 × 100
Price of 100 pens after discount at store 1 = $359
and
Price of 100 pens after discount at other store = $3.63 × 100
Price of 100 pens after discount at other store = $363
so total price difference of 100 pens between store is $363 - $359
total price difference of 100 pens between store is $4
