A seller has an increase of 40% in sale today compared to yesterday. The sale today amounts to 70,000. How much was the amount of sale yesterday

Let the amount of sale yesterday be \( x \).

According to the problem, today's sale is 40% more than yesterday's, and today's sale amounts to 70,000. So we can write the equation:

\[
\text{Today's sale} = \text{Yesterday's sale} + 40\% \text{ of Yesterday's sale}
\]

In mathematical terms, this can be written as:

\[
70,000 = x + 0.40x
\]

Simplifying:

\[
70,000 = 1.40x
\]

Now, solve for \( x \):

\[
x = \frac{70,000}{1.40} = 50,000
\]

Thus, the sale amount yesterday was **50,000**.

Would you like more details on this solution or have any other questions?

Here are 5 related questions for further practice:
1. What would the sale amount be if today's sales increased by 25% compared to yesterday?
2. If yesterday's sale was 50,000 and today's sale was 60,000, what is the percentage increase?
3. If tomorrow's sales increase by 20% compared to today's sales, what will tomorrow's sales be?
4. If the seller has a target to increase tomorrow's sales by 50% compared to today, how much should they aim for?
5. What would the sale amount be if there was a 10% decrease instead of an increase?

**Tip:** To calculate percentage change, always compare the difference with the original (or older) value.

A seller has an increase of 40% in sale today compared to yesterday. The sale today amounts to 70,000. How much was the amount of sale yesterday?

Learn how to calculate yesterday's sale when today's sale is 70,000 with a 40% increase. This step-by-step solution covers percentage increase and algebraic equations. Suitable for students in Grades 6-8.

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