https://file.aiquickdraw.com/mathbot/file/1726679995565onk3ddyb.jpg

Let's solve each part of the question, one by one.

### (a) Increase 60 by 35%
To increase a number by a percentage, we calculate:
\[
\text{Increase} = \text{Original Value} \times \left(1 + \frac{\text{Percentage}}{100}\right)
\]
For \( 60 \) increased by \( 35\%\):
\[
60 \times \left(1 + \frac{35}{100}\right) = 60 \times 1.35 = 81
\]
So, the result for (a) is **81**.

---

### (b) Increase 28 by 125%
For \( 28 \) increased by \( 125\%\):
\[
28 \times \left(1 + \frac{125}{100}\right) = 28 \times 2.25 = 63
\]
So, the result for (b) is **63**.

---

### (c) Decrease 120 by 45%
To decrease a number by a percentage, we calculate:
\[
\text{Decrease} = \text{Original Value} \times \left(1 - \frac{\text{Percentage}}{100}\right)
\]
For \( 120 \) decreased by \( 45\%\):
\[
120 \times \left(1 - \frac{45}{100}\right) = 120 \times 0.55 = 66
\]
So, the result for (c) is **66**.

---

### (d) Decrease 216 by 37.5%
For \( 216 \) decreased by \( 37.5\%\):
\[
216 \times \left(1 - \frac{37.5}{100}\right) = 216 \times 0.625 = 135
\]
So, the result for (d) is **135**.

---

Would you like further details or have any questions?

### Related Questions:
1. How do you calculate percentage increase and decrease for any given value?
2. What is the effect of increasing a number by more than 100%?
3. How does the formula for decreasing a value change if the percentage exceeds 100%?
4. What happens if we increase or decrease a value by 0%?
5. Can you apply percentage increase and decrease calculations to negative numbers?

### Tip:
When dealing with percentage increases greater than 100%, remember that the final value will more than double the original!

Find the value of each of the following:
(a) Increase 60 by 35%
(b) Increase 28 by 125%
(c) Decrease 120 by 45%
(d) Decrease 216 by 37.5%

Learn how to calculate percentage increases and decreases with examples like increasing 60 by 35%, 28 by 125%, and decreasing 120 by 45% and 216 by 37.5%. Perfect for students in Grades 5-7.

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