4.3: One-Step Equation word problems

The average cost of a school lunch today is $4.35, which is $2.85 more than the average cost of a lunch in 1990. What was the average cost of a lunch in 1990.

Step one: Write the equation.

Your little sister is too small to stand on the scale. You decide to get on the scale holding her and find your combined weight to be 112 pounds. You know that you weight 94 pounds. How much does your little sister weigh?

Step one: Write the equation.

The charge for a microwave repair was $81.21, including tax. If the tax was $6.70, then how much was the repair?


Write the equation.

According to CBS, the average cost of a Super Bowl ticket in 2010 was $3,509. This is $441 less than the cost of a 2015 ticket. How much was a ticket in 2015?


Write the equation.

A fence surrounds two sides of a backyard. The total length of the fence is 86 feet, with the longest portion measuring 51.5 feet. What is the length of the second side of the fence?


Write the equation.

A skyscraper in Dubai is 2,722 feet high. A news station antenna in North Dakota measures 659 feet shorter than the skyscraper in Dubai. How tall is the news station antenna?


Write the equation.