A survey of 200 people yielded the following information: 94 people owned a Blu-ray player, 125 owned a microwave oven, and 72 owned both. How many people owned the following? (a) a Blu-ray player or a microwave oven (b) a Blu-ray player but not a microwave oven (c) a microwave oven but not a Blu-ray player (d) neither a Blu-ray player nor a microwave oven
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.
A survey of 200 people yielded the following information: 94 people owned a Blu-ray player, 125 owned a microwave oven, and 72 owned both. How many people owned the following?
It is given that the total number of people surveyed is 200. So, the universal set U=200.
The number of people owned a Blu-ray player is n(B)=94.
The number of people owned a microwave oven is n(M)=125.
The number of people owned a Blu-ray player and a microwave oven is .
(a)
Evaluate the number of people who own either a Blu-ray player or microwave oven as follows.
Therefore, the number of people who own either a Blu-ray player or microwave oven is 147.
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