un Games is a store in the mall. They are having a going out of business sale. • The first day the price is 20% off the original price. • The second day the price is 20% off the first day price. • The third day the price is 20% off the second day price. • The fourth day the price is 20% off the third day price. • The fifth day the price is 20% off the fourth day price. The sixth day the business will be closed. Charlie wants to buy a used video game system with an original price of $125. He says he can wait until the fifth day of the sale and then he won’t have to pay anything for it because 20% off+ 20% off + 20% off + 20% off + 20% off = 100% off. Explain whether you agree with Charlie. Use mathematics to support your thinking.
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.
Fun Games is a store in the mall. They are having a going out of business sale.
• The first day the price is 20% off the original price.
• The second day the price is 20% off the first day price.
• The third day the price is 20% off the second day price.
• The fourth day the price is 20% off the third day price.
• The fifth day the price is 20% off the fourth day price.
The sixth day the business will be closed.
Charlie wants to buy a used video game system with an original price of $125. He says he can wait until the fifth day of the sale and then he won’t have to pay anything for it because 20% off+ 20% off + 20% off + 20% off + 20% off = 100% off.
Explain whether you agree with Charlie.
Use mathematics to support your thinking.
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