13. a shop owner spent $540 to purchase a stock of
computer keyboards. if the price of each keyboard
had been reduced by $2, he could have bought 3
more keyboards. find the price of one keyboard.

m a t h w a y. c o m

step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".

answer: none of these answers are correct only the second half is

step-by-step explanation:

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%