Kameren has blue and black pens. He has 40 pens in total and
$35% $
of them are blue. How many black pens does
he have

Kameren has 40 pens in total, and 35% of them are blue. To find how many black pens he has, we can calculate the number of blue pens first, then subtract that from the total number of pens.

### Step 1: Calculate the number of blue pens
To find 35% of 40, use the formula:

\[
\text{Number of blue pens} = \frac{35}{100} \times 40 = 0.35 \times 40 = 14
\]

Kameren has 14 blue pens.

### Step 2: Calculate the number of black pens
Since the total number of pens is 40, and 14 are blue, the remaining pens must be black:

\[
\text{Number of black pens} = 40 - 14 = 26
\]

Thus, Kameren has **26 black pens**.

Would you like more details or have any questions? Here are some related questions:

1. What percentage of the pens are black?
2. How many pens would be black if Kameren had 50 pens in total instead of 40?
3. If 60% of the pens were blue, how many would be black?
4. How many more blue pens would Kameren need to make half of his pens blue?
5. What would be the new percentage of black pens if Kameren lost 5 black pens?

**Tip**: When calculating percentages, always multiply the percentage (in decimal form) by the total amount.

Kameren has blue and black pens. He has 40 pens in total and 35% of them are blue. How many black pens does he have?

Learn how to calculate the number of black pens when given a total of 40 pens and 35% of them are blue. This problem covers basic arithmetic and percentage concepts, suitable for students in Grades 5-7.

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