Solve each problem using Polya's four-step problem-solving strategy An investor bought 20 shares of stock for a total cost of $1200 and then sold all the shares for $1400. A few months later, the investor bought 25 shares of the same stock for a total cost of $1800 and then sold all the shares for $1900 How much money did the investor earn on these investments?
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.
Solve each problem using Polya's four-step problem-solving strategy
An investor bought 20 shares of stock for a total cost of $1200 and then sold all the shares for $1400. A few months later, the investor bought 25 shares of the same stock for a total cost of $1800 and then sold all the shares for $1900 How much money did the investor earn on these investments?
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