Let's solve the equation \( 1400 = X + (X \times 0.25) \).

1. Express \( X \times 0.25 \) as \( 0.25X \):

\[
1400 = X + 0.25X
\]

2. Combine the terms on the right side:

\[
1400 = 1X + 0.25X = 1.25X
\]

3. Solve for \( X \) by dividing both sides by 1.25:

\[
X = \frac{1400}{1.25}
\]

4. Perform the division:

\[
X = 1120
\]

So, \( X = 1120 \).

Would you like more details or have any questions?

Here are 5 related questions for further practice:
1. Solve \( 1600 = X + (X \times 0.20) \).
2. If \( Y = X + (X \times 0.15) \) and \( Y = 1725 \), find \( X \).
3. Solve \( 2100 = 2X + (X \times 0.50) \).
4. What is the value of \( X \) if \( 1250 = X + (X \times 0.30) \)?
5. Find \( X \) if \( 1800 = X + (X \times 0.10) \).

**Tip:** Always check your work by substituting the value of \( X \) back into the original equation to ensure it satisfies the equation.

Learn how to solve the equation 1400 = X + (X * 0.25) with a step-by-step solution. This problem involves solving linear equations with percentages, covering basic algebraic concepts suitable for Grades 7-9 students.

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