General Mathematics: Impact of Inflation on Costs and Wages

Vocabulary flashcards covering the definitions, causes, and mathematical formulas related to inflation and its impact on costs and wages based on the General Mathematics lecture by Sir Louie.

Inflation

The general increase in prices of goods and services over time, which results in a corresponding decrease in the purchasing power of money.

Demand-pull inflation

A type of inflation that occurs when the demand for goods is higher than the economy’s ability to produce them, often described as "too many buyers, not enough products."

Cost-push inflation

Inflation caused by an increase in production costs, such as higher prices for raw materials or higher wages for workers.

Built-in inflation

Inflation that occurs when businesses increase prices to keep up with rising wages and costs, creating a continuous cycle of rising prices and wages.

Nominal Income

The actual amount of money a person receives as salary.

Real Income

The value of income based on what it can actually buy, representing purchasing power after adjusting for inflation.

Inflation Rate (Formula)

$$\text{Inflation Rate} = \frac{\text{Price Increase}}{\text{Original Price}} \times 100\%$$

Price Increase (PI)

$\text{PI} = \text{New Price (NP)} - \text{Original Price (OP)}$ or $\text{PI} = \text{Original Price} \times \text{Inflation Rate}$

New Price (NP) Formula

$$\text{New Price} = \text{Original Price} \times (1 + \text{Inflation Rate})$$

Original Price (OP) Formula

$\text{Original Price} = \frac{\text{New Price}}{1 + \text{Inflation Rate}}$, which reverses the effect of inflation.

Cumulative Inflation Formula (Future Price)

$\text{Future Price} = \text{Present Price} \times (1 + r)^n$, where $r$ is the annual inflation rate in decimal form and $n$ is the number of years.

Real Income (Formula)

$$\text{Real Income} = \frac{\text{Nominal Income}}{1 + \text{Inflation Rate}}$$

Required Salary Formula

$\text{Required Salary} = \text{Current Salary} \times (1 + \text{Inflation Rate})$, representing the amount needed to maintain purchasing power.

Wage Increase Rate (Formula)

$$\text{Wage Increase Rate} = \frac{\text{New Wage} - \text{Original Wage}}{\text{Original Wage}} \times 100\%$$

Escalation clause

A contract provision, such as in a 7-year project contract, where labor and material costs increase yearly in line with inflation.

Inflation

The general increase in prices of goods and services over time and the corresponding decrease in the purchasing power of money.

Demand-pull inflation

A type of inflation that happens when the demand for goods is higher than the economy’s ability to produce them, often described as “too many buyers, not enough products.”

Cost-push inflation

Price increases driven by higher production costs, such as higher prices for raw materials or higher wages for workers.

Built-in inflation

Occurs when businesses increase prices to keep up with rising wages and costs, creating a cycle where prices and wages continuously push each other up.

Price Increase (PI)

The difference between the new cost and the previous cost, calculated as $PI = \text{New Price} - \text{Original Price}$.

Inflation Rate formula

The percentage increase over a specified period of time, calculated as $\text{Inflation Rate} = \frac{\text{Price Increase}}{\text{Original Price}} \times 100\%$.

New Price formula

Formula used when the original price and inflation rate are known: $\text{New Price} = \text{Original Price} \times (1 + \text{Inflation Rate})$.

Original Price formula

Formula used to reverse the effect of inflation: $\text{Original Price} = \frac{\text{New Price}}{1 + \text{Inflation Rate}}$.

Future Price (Cumulative Inflation)

The price of a product after several years of inflation, calculated as $\text{Future Price} = \text{Present Price} \times (1 + r)^{n}$, where $r$ is the annual inflation rate and $n$ is the number of years.

Nominal Income

The actual amount of money a person receives.

Real Income

The value of income based on what it can actually buy, also known as purchasing power.

Real Income formula

A simplified way to estimate purchasing power: $\text{Real Income} = \frac{\text{Nominal Income}}{1 + \text{Inflation Rate}}$.

Required Salary formula

The amount a person should earn to maintain their purchasing power against inflation: $\text{Required Salary} = \text{Current Salary} \times (1 + \text{Inflation Rate})$.

Wage Increase Rate formula

Calculated to compare wage growth with inflation using the formula: $\text{Wage Increase Rate} = \frac{\text{New Wage} - \text{Original Wage}}{\text{Original Wage}} \times 100\%$.