By how much percentage 700 has to be increased to make it 840?

Options

A. `16.67%`
B. `20%`
C. `8.33%`
D. `120%`

Answer

To find out by how much percentage 700 has to be increased to make it 840, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Original Value and the New Value:**
- Original Value (OV) = 700
- New Value (NV) = 840

2. **Calculate the Difference:**
- Difference = New Value - Original Value
- Difference = 840 - 700 = 140

3. **Use the Percentage Formula:**
- The formula to find the percentage increase is:
\[ \text{Percentage Increase} = \left(\frac{\text{Difference}}{\text{Original Value}}\right) \times 100 \]

4. **Substitute the Values into the Formula:**
- Percentage Increase = \(\left(\frac{140}{700}\right) \times 100\)

5. **Calculate the Fraction:**
- \(\frac{140}{700} = 0.2\)

6. **Multiply by 100 to Get the Percentage:**
- Percentage Increase = \(0.2 \times 100 = 20\%\)

### Final Answer:
The percentage increase required to change 700 to 840 is **20%**.

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