1. Find your credit card balance at the end of July. Your balance on your credit card on July 1st is $43.20. On the 10th you buy lunch for $9.50. You make the min payment of $15 on 20th. This credit card charges 16% interest. (Use the daily average balance)
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.
The rate of interest is 16% APR(annual percentage rate). So, the daily rate of interest is .
The initial balance is .
Then, we obtain the following:
| Date | Transaction | Balance |
| 1 July | No transaction | $ 43.20 |
| 10 July | $ 9.50 lunch | $ 52.70 |
| 20 July | $ 15 min payment | $ 67.70 |
The balance will remain same on the on the days with no transactions. Thus, at the end of July, total expenditure is $ 67.70.
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