A store purchased coats from a manufacturer at $40 each and then sold all of the coats. The store's gross profit on the sale of the coats was what percent of the store's revenue from the sale of the coats?

(1) The store sold 20 percent of the coats at $80 each and the rest of the coats at $60 each.

(2) The store's total revenue from the sale of the coats was $6,400.

West River Glen is deciding which network architecture should replace its old copper telephone lines. The town will replace 300 miles of Outside Plant (OSP) cable that will serve approximately 2,500 homes.

The first option is to install a Fiber to the Home (FTTH) system architecture that uses fiber-optic cable to transmit signals from the source to each home. The advantages of this architecture include greater bandwidth capabilities, less signal loss, and slightly lower new-cable deployment

costs than the second option, Hybrid Fiber-Coax (HFC).

An HFC network integrates fiber-optic cables and devices with coaxial cables. This will cost the town substantially less money for internal equipment and for customer installations. However, the coaxial cable does not last as long as fiber-optic cable and will thus need to be replaced more frequently, resulting in higher long-term maintenance expenses.

The town believes that either the FTTH or HFC architectures will be capable of serving the communities' data and television needs for the next 30 years.

Sue's monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000. If Sue's monthly salary was the same in July as in August, how much greater were her sales in July than in August?

(1) Sue's monthly earnings were $3,620 in July and $3,580 in August.

(2) Sue's monthly salary was $3,500 in July and in August.

Julian had five indoor potted plants, each of which - in order to survive - only needed to be watered once in a certain number of days. That number was not the same for all five plants. Julian last watered the plants - all of them - at noon on a Monday. He left home that Thursday and returned the following Thursday at noon. None of the plants were watered while Julian was away, and none of them died from any cause except lack of watering. At least one plant was alive when Julian returned. How many were alive in all?

(1) Exactly two plants were such that they would have survived only if Julian had watered them on the day he left home.

(2) Three plants were identical in terms of watering needs.

Lauren wants to assemble a collection of books with fish-themed titles by shopping at her local bookstore. On the bookstore's website, she searched for the keyword fish. The search returned only the results shown in the table. From the copies in stock included in the search results, Lauren purchased 4 books with distinct titles from 4 different sections with an average (arithmetic mean) price of more than $12.00.

For each of the following statements, select Yes if the statement is true about the purchase that Lauren made. Otherwise, select No.

Machine K and Machine N, working simultaneously and independently at their respective constant rates, process of the shipment of a certain chemical product in 1.6 hours. Then machine K stopped working, and Machine N, working alone at it's constant rate, processed the rest of the shipment in 2 hours. How many hours would it have taken Machine K, working alone at its constant rate, to process the entire shipment?

If x² > y², then

­A certain country with a total population of 50 million is divided into six regions J, K, L, M, N and P, ranked from the most populated to the least populated, with some of the populations possibly equal. If 21 percent of the total population of the country is in region M and if the population of region P is 2 million, what is the greatest possible population of region N?

Which of the following describe(s) two quantities that vary inversely?

I. The price per gallon of a certain home heating oil and the number of gallons that can be purchased for $600.

II. The revenue from the sale of tickets costing $6 each and the number of tickets sold.

III. The average rate at which a car is driven on a certain 60-mile trip and the amount of time required for the trip.

If Sn is the sum of first n terms of a certain sequence and S_n = n (n² + 1) for all positive integers. What is the 4th term of the sequence?