Math Olympiad 79

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Math Olympiad 79
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Question 1
4 minutes

• A freight train travels 1 mile in 1 minute 30
  seconds. At this rate, how many miles will the
  train travel in 1 hour?

Answer40 miles
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Question 2
5 minutes

• A person has four special coins whose values in
  cents are shown below. How many different amounts
  can the person make using one or more of the
  coins?

3
1
5
10
Answer15
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Question 3
5 minutes

• If I add 5 to 1/3 of a number, the result is ½ of
  the number. What is the number?

Answer 30
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Question 4
6 minutes

• The length of AE is 20 cm. B is the midpoint of
  AC, C is the midpoint of BD, and D is the
  midpoint of BE. What is the length of DE in cm?

A
B
C
D
E
20
Answer 8 cm
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Question 5
6 minutes

• What simple fraction is equal to the complex
  fraction shown below?

Answer