Molly really enjoyed country music. After listening one afternoon to her favorite station for an hour, she had heard 25 songs. All but 2 songs were about either truck drivers, being in love, hound-dog owners, or some combination of the three. She noted the following information: All of the truck drivers were in love. Three-fourths of the truck drivers were not hound-dog owners. There were five hound-dog owners who were in love. Of the hound-dog owners who were not truck drivers, half of them were in love. Eighty percent of all the songs concerned people in love. How many songs concerned people who were in love but were neither truck drivers nor hound-dog owners?
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.
Molly really enjoyed country music. After listening one afternoon to her favorite station for an hour, she had heard 25 songs. All but 2 songs were about either truck drivers, being in love, hound-dog owners, or some combination of the three. She noted the following information: All of the truck drivers were in love. Three-fourths of the truck drivers were not hound-dog owners. There were five hound-dog owners who were in love. Of the hound-dog owners who were not truck drivers, half of them were in love. Eighty percent of all the songs concerned people in love. How many songs concerned people who were in love but were neither truck drivers nor hound-dog owners?
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