sat-dog

A printer produces posters at a constant rate of $42$ posters per minute. At what rate, in posters per hour, does the printer produce the posters?

The International Space Station orbits Earth at an average speed of 4.76 miles per second. What is the space station’s average speed in miles per hour?

For a person m miles from a flash of lightning, the length of the time interval from the moment the person sees the lightning to the moment the person hears the thunder is k seconds. The ratio of m to k can be estimated to be 1 to 5. According to this estimate, the person is how many miles from a flash of lightning if the time interval is 25 seconds?

The population density of Iceland, in people per square kilometer of land area, increased from 2.5 in 1990 to 3.3 in 2014. During this time period, the land area of Iceland was 100,250 square kilometers. By how many people did Iceland’s population increase from 1990 to 2014?

A customer spent $\$27$ to purchase oranges at $\$3$ per pound. How many pounds of oranges did the customer purchase?

A group of monarch butterflies migrated from Chicago, Illinois, to Michoacán, Mexico, flying a total of 2,100 miles. It took a single butterfly in the group 120 days to travel this route one way. On average, how many miles did the butterfly travel per day?

If $\frac{x}{y}=4$ and $\frac{24x}{ny}=4$, what is the value of $n$?

In a box of pens, the ratio of black pens to red pens is $8$ to $1$. There are $40$ black pens in the box. How many red pens are in the box?

Pure beeswax has a density of 0.555 ounce per cubic inch. An online company sells pure beeswax at a price of $8.00 per ounce. What is the selling price, in dollars per cubic inch, for pure beeswax purchased from this company?

The population density of Worthington is $290$ people per square mile. Worthington has a population of $\mathrm{92,800}$ people. What is the area, in square miles, of Worthington?

A wind turbine completes $900$ revolutions in $50$ minutes. At this rate, how many revolutions per minute does this turbine complete?

In the table above, the ratio of y to x for each ordered pair is constant. What is the value of k ?

One method of calculating the approximate age, in years, of a tree of a particular species is to multiply the diameter of the tree, in inches, by a constant called the growth factor for that species. The table above gives the growth factors for eight species of trees. If a white birch tree and a pin oak tree each now have a diameter of 1 foot, which of the following will be closest to the difference, in inches, of their diameters 10 years from now? (1 foot = 12 inches)

The ratio of t to u is 1 to 2, and . What is the value of u ?

A special camera is used for underwater ocean research. When the camera is at a depth of $58$ fathoms, what is the camera's depth in feet? $\left(1 \text{fathom}=6 \text{feet}\right)$

A sample of oak has a density of $807$ kilograms per cubic meter. The sample is in the shape of a cube, where each edge has a length of $0.90$ meters. To the nearest whole number, what is the mass, in kilograms, of this sample? 

On April 18, 1775, Paul Revere set off on his midnight ride from Charlestown to Lexington. If he had ridden straight to Lexington without stopping, he would have traveled 11 miles in 26 minutes. In such a ride, what would the average speed of his horse have been, to the nearest tenth of a mile per hour?

How many yards are equivalent to $612$ inches? $\left(1\text{ yard}=36 \text{inches}\right)$

Rectangle A has length 15 and width w. Rectangle B has length 20 and the same length-to-width ratio as rectangle A. What is the width of rectangle B in terms of w ?

Shaquan has 7 red cards and 28 blue cards. What is the ratio of red cards to blue cards that Shaquan has?

Jeremy deposited x dollars in his investment account on January 1, 2001. The amount of money in the account doubled each year until Jeremy had 480 dollars in his investment account on January 1, 2005. What is the value of x ?

Tanya earns $13.50 per hour at her part-time job. When she works z hours, she earns dollars. Which of the following expressions gives the amount, in dollars, Tanya will earn if she works hours?

A cherry pitting machine pits $12$ pounds of cherries in $3$ minutes. At this rate, how many minutes does it take the machine to pit $96$ pounds of cherries?

A kangaroo has a mass of $28$ kilograms. What is the kangaroo's mass, in grams? $\text{(}1 \text{kilogram}=\mathrm{1,000} \text{grams)}$

The glass pictured above can hold a maximum volume of 473 cubic centimeters, which is approximately 16 fluid ounces. Jenny has a pitcher that contains 1 gallon of water. How many times could Jenny completely fill the glass with 1 gallon of water?