Livingston is a marble freak and loves to play at school. During the first break, he doubled the number of marbles he had. During the second break, he lost 4 marbles. During the third break, he increased his stock of marbles by twoŠ\thirds. During lunch, however, he lost one-fourth of his marbles. After school, Livingston played again and tripled what he had. He went home with 45 marbles. How many did he start with
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.
Livingston is a marble freak and loves to play at school. During the first break, he doubled the number of marbles he had. During the second break, he lost 4 marbles. During the third break, he increased his stock of marbles by twoŠ\thirds. During lunch, however, he lost one-fourth of his marbles. After school, Livingston played again and tripled what he had. He went home with 45 marbles. How many did he start with
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