MathCounts 2

If it was 10:30 AM 55 minutes ago, in how many minutes will it be noon?

• 35
• 45
• 90
• 180

A tennis court with a length of 78' is 6" longer than twice its width.  What is the width of the tennis court?

• 48'
• 72"
• 36'
• 84'

What is the value if 5 x (11+4/4)?

• 56
• 60
• 55
• 62

The ratio of the lengths of corresponding sides or two smaller decagons is 1:2.  If the perimeter of the smaller decagon is 76 cm, what is the perimeter of the larger decagon?

• 38 cm
• 78 cm
• 152 cm
• 154 cm

A number is selected is selected at random from the first positive 20 integers.  What is the probability that the number selected is an odd prime number?  Express your answer as a percent

• 40%
• 50%
• 45%
• 35%

Sam wishes to contribute a total of $2500 to Charity A and Charity B in the ratio of 2:3.  How many dollars should Sam contribute to Charity B?

• $1,500
• $1,000
• $1,250
• $2,000

What is the positive difference between the value of 2 x (3 + 4) and 2 x 3 +4? 

• 5
• 4
• 6
• 8

What is the greatest prime factor of 96?

• 3
• 2
• 5
• 13

The length, width and height of a rectangular prism are in the ratio of 3:2:1, respectively.  What is the length of the prism if it has a volume of 48 cu inches?

• 4"
• 12"
• 18"
• 6"

It takes a mechanic 4 hours to install carburetors in 3 cars.  At this rate, how many minutes will it take the mechanic to install carburetors in 5 cars?

• 2 hours, 20 minutes
• 400 minutes
• 1 1/2 hours
• 300 minutes