The Daytona 500 started in 1959 with an average speed of 135 mph but before they raced on the big speedway they would race up and down on the beach. In 1954 Lee Petty raced on the beach for a total of 160 miles. As the 2-hour race developed Lee averaged 90 mph for the first part of the race but only 60 mph for the last part. How long did he race at 90 mph and how long at 60 mph? Fill in the below with the information to set up the system of equations: Time for first part(_________)+Time for last part (_________)= Time for whole race (________). Distance for first part (_________)+Distance for last part(___________)= Disatnce for the whole race (___________).
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
The Daytona 500 started in 1959 with an average speed of 135 mph but before they raced on the big speedway they would race up and down on the beach. In 1954 Lee Petty raced on the beach for a total of 160 miles. As the 2-hour race developed Lee averaged 90 mph for the first part of the race but only 60 mph for the last part. How long did he race at 90 mph and how long at 60 mph?
Fill in the below with the information to set up the system of equations:
Time for first part(_________)+Time for last part (_________)= Time for whole race (________).
Distance for first part (_________)+Distance for last part(___________)= Disatnce for the whole race (___________).
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