Clincher

A new game is played on a rectangular field that is 150 feet by 60 feet. A chalk line is drawn on the field exactly 2 feet inside the outer rectangle at all points. What is the total length in feet of the chalk line?

Sarah jogs at an average rate of $\frac{2}{15}$  mile per minute. At this rate, how many miles will she jog in 30 minutes?

The scale on the plans for the new highway is $2\frac{1}{2}$  inches equal 2200 feet. If the actual distance between two exits on the highway is 5500 feet, how many inches apart are the two exits on the plans?

A tank holds 5075 gallons of water. How many containers of water can be filled from the tank if each container holds $6\frac{1}{4}$  gallons?

At the end of the first quarter, the Gazette had 3450 employees. In the second quarter, 12% more employees were hired. How many new employees did the Gazette hire in the second quarter?

A bag contains 20 table tennis balls, each one painted with a different number from 1 to 20. If a ball is chosen at random from the bag, what is the probability that it is painted with a number greater than 15?

A student estimated a mass to be 250g, but upon carefully measuring it, found the actual mass to be 240g. What is the percent error?