Two cities n miles apart are located s inches apart on a certain map that is drawn to scale. What is the difference (in inches) on the map between two cities that are n + 1 miles apart?

Carla has 2 more tapes than 3 times the number of tapes Julia has. If C represents the number of Carla's tapes and J represents the number of Julia's tapes, which of the following is a correct expression relating C and J?

After Jenny deposited s dollars into her savings account, she had d dollars in the account. After that, if she withdrew (s - 70) dollars from this account, how many dollars did she have in her account?

The total weight of Bill and his son Tommy is 250 pounds. If Bill's weight is 10 pounds more than 3 times Tommy's, what is Tommy's weight in pounds?

If Jim receives m marbles in addition to the number of marbles he had originally, he will have t times as many as he had originally. In terms of m and t, how many marbles did Jim originally have?

If a ball thrown straight up at a certain speed, at height h (in feet), after t seconds, is given by the formula h = 40t - 16t². How many feet high will the ball be one second after it is thrown?

The first third of a 75-mile trip took twice as long as the rest of the trip. If the first third took h hours, what was the average speed, in miles per hour, for the whole trip?

The Acme, Rent-a-car agency, charges $10.00 per day and $0.10 per mile to rent a car. The Super, Rent-a-car agency, charges $20.00 per day and $0.05 per mile to rent a car. If a car is rented for 1 day, at how many miles will the rental charges of the two agencies be equal?

A postal clerk sold 75 stamps for a total of $10.85. Some of the stamps were 15-cent stamps and the remaining stamps were 13-cent stamps. How many of the stamps were 13-cent stamps?

If the cost of x gallons of unleaded gasoline, priced at $1.24 per gallon, equals the cost of (x + 2) gallons of regular gasoline, priced at $1.16 per gallon, find the value of x.

The daily rate for a hotel room that sleeps 4 people is $39 for one person and x dollars for each additional person. If 3 people can take the room for one day and each pays $21 for the room, what is the value of x?

At 9 a.m, train T left the station and two hours later train S left the same station on a parallel track. If train T averaged 60 kilometers per hour and train S averaged 75 kilometers per hour until S passed T, at what time did S pass T?

Two tanks X and Y are filled to capacity with jet fuel. Tank X holds 600 gallons more than tank Y. If 100 gallons of fuel were to be pumped from each tank, tank X would then contain 3 times as much fuel as tank Y. What is the total amount of fuel in two full tanks (in gallons)?

If the cost of an item is $8 and the sum of the cost and the profit is $11, then the profit (in dollars) is

A secretary typed 6 letters, each of which had either 1 or 2 pages. If the secretary typed 10 pages in all, how many of the letters had 2 pages?

The price of ground coffee beans is 'd' dollars for 8 ounces and each ounce makes 'c' cups of brewed coffee. In terms of c and d, what is the cost (in dollars) of the ground coffee beans required to make 1 cup of brewed coffee?

If a certain object has been moving at the constant rate of x meters per minute, how many metres has the object moved in the last y seconds?

If 2/3 of the number of women attending a certain dance class is equal to 1/2 the number of men attending the class, what fraction of those attending the class are women?

The cost of sending a package by special delivery is x cents per ounce upto 10 ounces and y cents for each ounce in excess of 10 ounces. Which of the following represents the cost (in cents) of sending a package weighing w ounces (w > 10) by special delivery?

Sally buys a pen and a pencil for $1.45. If the pen costs $0.25 more than the pencil, how much does the pencil cost?

By weight, in a mixture of 5 grams, liquid A makes up 7 percent of solution I and 14.5 percent of solution II. If 3 grams of solution I is mixed with 2 grams of solution II, then liquid A accounts for what percent of the weight of the resultant solution?

Mario bought equal numbers of 2-cent and 3-cent stamps. If the total cost of the stamps was $1.00, what was the total number of stamps bought?

What was the original price (in dollars) of an item if a discount of 20% reduced the price to $100?

The entry ticket per child in a certain amusement park is 7/12 of the admission price per adult. If the entry ticket for 4 adults and 6 children is $112.50, what is the entry ticket per adult?

Vishal lives in town A. He leaves his house for exactly 10 hours everyday to sell fruits. He purchases his fruits from either local Town A market or from any of the three neighbouring towns B, C or D. It takes him 1 hour to reach C and 1.5 hour to reach D from A. The time required for traveling from B to C, C to D or B to D is 1 hour. In 1 hour, he sells, exactly 1 kg of fruits. The rates of fruits in the four towns are as follows: A = Rs. 20/kg, B = Rs. 25/kg, C = Rs. 10/kg, D = Rs. 11/kg. He completes each day without any stock at the end. Assume that the buying and selling price are the same.

How many extra hours should Vishal put in, in order to earn Rs. 120?