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Washington State Math Olympiad Hints and Solutions 2011 Grade 7 Measurement
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Problem |
1) John wants to know how tall Steve is, but Steve won't tell him. On a sunny day, John measures Steve's shadow and finds it to be 90 inches long. He quickly has a friend
measure his own shadow. John's shadow is 105 inches long. If John is 72 inches tall, how tall is Steve? Round to the nearest inch.
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2) Sharon takes a trip and travels at the speed
limit on the different roads within seconds of
getting on the road. The table shows her trip.
How far did she travel? Express your answer to
the nearest tenth of a mile.
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3) In March, Grandma gave Amy $15 on her 10th birthday. Amy starts saving for a trip to Disney Land. That March she also decides to add $5.75 to her savings every month. If she can cover tickets and transportation with her savings, they will go on her 15th birthday. Grandma decides she will contribute the remainder needed for Amy's 15th birthday present. On her 15th birthday they find out that their tickets will cost $125 and
transportation costs $260. If Amy has already added in the $5.75 for March, how much does Grandma need to contribute so that they will go?
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