1999 MIDDLE SCHOOL MATH OLYMPIAD
SIXTH GRADE MEASUREMENT
(Make sure you include the units in your answer!)
1. My uncle started driving at 8 a.m. this morning to Los Angeles. He is a cautious driver, and drives at a speed of 40 miles per hour. I left from the same place at 10:30 a.m. driving at 60 miles per hour. If neither of us stops, at what time will I catch my uncle on the highway?
2. Find the area of this figure. Points on the grid are 1 cm apart horizontally and vertically.
3. You are building a patio in your back yard. You want the patio to be a 12 foot by 6 foot rectangle. The patio will be made of bricks. Home Warehouse (a building supply store) has 6 inch by 4 inch bricks on sale for 25 cents each. How much will your patio bricks cost at Home Warehouse?
4. The standard formula for making concrete mix calls for sand, gravel, and cement. You need twice as much sand as cement and twice as much gravel as sand. If I want to make 3500 pounds of concrete mix, how many pounds of gravel do I need?
5. I went to Vancouver Canada last summer. Gasoline was 56 cents (Canadian) per liter. What was the price of gasoline in American dollars per gallon? Round your answer to the nearest cent.
Here are the conversion factors:
1 Canadian dollar = $1.51 American
1 gallon = 3.78 liters