Sure, I will explain each part step-by-step and provide the answers based on the calculations:
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### 1. Finding 25% of 40:
To calculate 25% of 40:
[tex]\[ \text{25% of 40} = \frac{25}{100} \times 40 \][/tex]
[tex]\[ = \frac{1}{4} \times 40 \][/tex]
[tex]\[ = 10 \][/tex]
So, 25% of 40 is 10.
### 2. Simplifying and Finding the Values:
a) 5% of Rs 200:
To calculate 5% of Rs 200:
[tex]\[ \text{5% of Rs 200} = \frac{5}{100} \times 200 \][/tex]
[tex]\[ = 0.05 \times 200 \][/tex]
[tex]\[ = 10 \][/tex]
So, 5% of Rs 200 is 10.
b) 10% of Rs 60:
To calculate 10% of Rs 60:
[tex]\[ \text{10% of Rs 60} = \frac{10}{100} \times 60 \][/tex]
[tex]\[ = 0.10 \times 60 \][/tex]
[tex]\[ = 6 \][/tex]
So, 10% of Rs 60 is 6.
c) 20% of Rs 500:
To calculate 20% of Rs 500:
[tex]\[ \text{20% of Rs 500} = \frac{20}{100} \times 500 \][/tex]
[tex]\[ = 0.20 \times 500 \][/tex]
[tex]\[ = 100 \][/tex]
So, 20% of Rs 500 is 100.
d) 25% of 60 boys:
To calculate 25% of 60 boys:
[tex]\[ \text{25% of 60 boys} = \frac{25}{100} \times 60 \][/tex]
[tex]\[ = 0.25 \times 60 \][/tex]
[tex]\[ = 15 \][/tex]
So, 25% of 60 boys is 15.
e) 50% of 450 students:
To calculate 50% of 450 students:
[tex]\[ \text{50% of 450 students} = \frac{50}{100} \times 450 \][/tex]
[tex]\[ = 0.50 \times 450 \][/tex]
[tex]\[ = 225 \][/tex]
So, 50% of 450 students is 225.
f) 75% of Rs 400:
To calculate 75% of Rs 400:
[tex]\[ \text{75% of Rs 400} = \frac{75}{100} \times 400 \][/tex]
[tex]\[ = 0.75 \times 400 \][/tex]
[tex]\[ = 300 \][/tex]
So, 75% of Rs 400 is 300.
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### Summary:
Here are all the values simplified:
- 25% of 40 is 10.
- 5% of Rs 200 is 10.
- 10% of Rs 60 is 6.
- 20% of Rs 500 is 100.
- 25% of 60 boys is 15.
- 50% of 450 students is 225.
- 75% of Rs 400 is 300.
