To find out what 70% is, you first need to determine the total amount represented by 100%. 

Since 30% is 18, you can calculate the total by using the formula:

\[
\text{Total} = \frac{\text{Value}}{\text{Percentage}} = \frac{18}{0.30} = 60
\]

Now, to find 70% of the total:

\[
70\% = 0.70 \times 60 = 42
\]

Thus, 70% is 42.

Would you like further details or have any questions? Here are some related questions you might consider:

1. How do you calculate percentages in general?
2. What are some real-life applications of percentages?
3. How can you convert percentages to fractions or decimals?
4. What is the relationship between different percentage values?
5. Can you provide an example of a percentage increase or decrease? 

**Tip:** Always convert the percentage to a decimal by dividing by 100 before performing calculations.

Discover how to calculate 70% of a total when 30% equals 18. This problem demonstrates the concept of percentages, providing a step-by-step solution to find the total and the desired percentage. Ideal for students in Grades 5-7.

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