Math Olympiad 79
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?
Answer:40 miles
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
Answer:15
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
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
Question 5
6 minutes
What simple fraction is equal to the complex fraction
shown below?
1
4
1
1
2
3
Answer:
7
31