- In 1993 a card company that sold 40% of the Mother’s Day cards that year priced its cards for that occasion between $1.00 and $8.00 each. If the revenue from sales of the company’s Mother’s Day cards in 1993 was r million dollars, which of the following indicates all possible values of r ?

A 155<r<1240

B 93<r<496

C 93<r<326

D 62<r<744

E 62<r<496

So the explanation is this.

According to the table, 155 million Mother’s Day cards were sold in 1993. The card company that sold 40 percent of the Mother’s Day cards sold (0.4)(155) million, or 62 million cards. Since that company priced the cards between $1.00 and $8.00 each, the revenue, r million dollars, from selling the 62 million cards was between ($1.00)(62) million and ($8.00)(62) million, or between $62 million and $496 million; that is, 62 < r < 496. Thus the correct answer is Choice E.

My question is, why the answer only considers the revenue for the 40% of the card. I guess I didn’t quite understand the question. Wasn’t it asking for the total revenue? Who can help me understand this?