A small generator burns two types of fuel: low sulfur and high sulfur, to produce electricity. For one hour, each gallon of low sulfur emits three (3) units of sul- fur dioxide, generates four (4) kilowatts electricity and costs P60.00. Each gallon of high sulfur emits five (5) units of sulfur dioxide, generates four (4) kilowatts electricity and costs P50.00. The environmental protection agency insists that the maximum amount of sulfur dioxide that can be emitted per hour is 15 units. Sup- pose that at least 16 kilowatts electricity must be generated per hour, how many gallons of low sulfur and how many gallons of high sulfur must be utilized per hour in order to minimize the cost of fuel?
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.
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