Tuesday, February 19, 2013

Swimming

Suzanne has determined that swimming the length of a rectangular pool 60 times is the same distance as swimming its perimeter 18 times. If the length of the swimming pool is 120 feet, what is the width of the pool?

Wednesday, February 13, 2013

Mean Integer

The mean (average) of five consecutive integers is 17. What is the greatest of the five integers?

Tuesday, February 12, 2013

Median Fraction

What common fraction is the median of the set {2/5, 1/3, 5/8, 1/4, 3/4, 2/3, 4/7}?

Monday, January 28, 2013

Allowance

When Will was 5 years old, his allowance was 25 cents. When he was 6, his allowance was 50 cents. When he was 7, his allowance was $1.00. If Will's allowance continued in this pattern, what will his allowance be at age 11?

Wednesday, January 23, 2013

How tall?

George's dad is 6'0" tall and his mother is 5'4" tall. One formula used to predict a child's adult height is to take the average of the height of the parent of the opposite gender and 13/12 the height of the parent of the same gender. Using this formula, what is George's expected adult height, in inches?

Tuesday, January 22, 2013

Prices each Month

In a boutique, items were put in a showcase, and each was assigned a price for January. Each month after that, the price was 10 percent less than the price for the previous month. What is the ratio of the price of an item in April to the price of the same item in January? Express your answer as a common fraction.

Tuesday, January 15, 2013

What is the number?

If twice the number is equal to 6 more than half the number, what is the number?