$$ 4.3 .4 \quad 8\left(4 \frac{3}{n}+3 \frac{8}{9}\right) $$ 4.4. Yogut expiring in four days is placed on discount of $$ 30 \% $$ OFF . The original price of the jugurt is R04. Determine the price of the yogut aner the price has teduced. (3) 4 \% Caleulate the perventage increase if the price of a bus ticket increases from K60 to R84. (3) 4.6. Calculate the percentage decrease if the prise of petrol gocs down from $$ R 10 $$ a litre to R9. (1)

Question

UpStudy AI · Accepted Answer

Let's solve each part of the problem step by step.

### 4.4 Yogurt Discount Calculation

**Known Conditions:**
- Original price of yogurt: $$ R04 $$
- Discount: $$ 30\% $$

**Step 1: Calculate the discount amount.**
The discount amount can be calculated using the formula:
$$
\text{Discount Amount} = \text{Original Price} \times \frac{\text{Discount Percentage}}{100}
$$
Substituting the values:
$$
\text{Discount Amount} = 4 \times \frac{30}{100} = 4 \times 0.3 = 1.2
$$

**Step 2: Calculate the reduced price.**
The reduced price can be calculated as:
$$
\text{Reduced Price} = \text{Original Price} - \text{Discount Amount}
$$
Substituting the values:
$$
\text{Reduced Price} = 4 - 1.2 = 2.8
$$

### 4.5 Percentage Increase Calculation

**Known Conditions:**
- Original price of bus ticket: $$ K60 $$
- New price of bus ticket: $$ R84 $$

**Step 1: Calculate the increase in price.**
$$
\text{Increase} = \text{New Price} - \text{Original Price} = 84 - 60 = 24
$$

**Step 2: Calculate the percentage increase.**
The percentage increase can be calculated using the formula:
$$
\text{Percentage Increase} = \left(\frac{\text{Increase}}{\text{Original Price}}\right) \times 100
$$
Substituting the values:
$$
\text{Percentage Increase} = \left(\frac{24}{60}\right) \times 100 = 0.4 \times 100 = 40\%
$$

### 4.6 Percentage Decrease Calculation

**Known Conditions:**
- Original price of petrol: $$ R10 $$
- New price of petrol: $$ R9 $$

**Step 1: Calculate the decrease in price.**
$$
\text{Decrease} = \text{Original Price} - \text{New Price} = 10 - 9 = 1
$$

**Step 2: Calculate the percentage decrease.**
The percentage decrease can be calculated using the formula:
$$
\text{Percentage Decrease} = \left(\frac{\text{Decrease}}{\text{Original Price}}\right) \times 100
$$
Substituting the values:
$$
\text{Percentage Decrease} = \left(\frac{1}{10}\right) \times 100 = 0.1 \times 100 = 10\%
$$

### Summary of Results
- **Reduced price of yogurt:** $$ R2.8 $$
- **Percentage increase in bus ticket price:** $$ 40\% $$
- **Percentage decrease in petrol price:** $$ 10\% $$
- Yogurt price after discount: R2.8 - Bus ticket price increase: 40% - Petrol price decrease: 10%

Solución de inteligencia artificial de Upstudy

Responder

Solución

Bonus Knowledge

preguntas relacionadas

Latest Arithmetic Questions