(Rate Problems + Percents – Price, Qty, and Revenue)
Last Sunday a certain store sold copies of Newspaper A for $1.00 each and copies of
Newspaper B for $1.25 each, and the store sold no other newspapers that day. If r
percent of the store’s revenues from newspaper sales was from Newspaper A and if p
percent of the newspapers that the store sold were copies of Newspaper A, which of the
following expresses r in terms of p?
答案：D