If the price of a magazine is to be doubled, by what percent will
the number of magazines sold decrease?
1) The current price of the magazine is $1.00.
2) For every $0.25 of increase in price, the number of magazines
sold will decrease by 10 percent of the number sold at the current
my explanation in yellow...
2... Let current price be x.
New price = 2x
but we need current price to come up with a solution
Combine.... new price = $2 ...so we can easily calculate the percent increase