ind: 16% of 25 litres b) 4% of a number whose 4% is 72 d) ratio of 15 days : 3 weeks
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ind: 16% of 25 litres b) 4% of a number whose 4% is 72 d) ratio of 15 days : 3 weeks
ind: 16% of 25 litres b) 4% of a number whose 4% is 72 d) ratio of 15 days : 3 weeks
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Answer:
5:7
Step-by-step explanation:
a) To find 16% of 25 liters, you can use the formula:
\[ \text{Percentage of a quantity} = \left(\frac{\text{Percentage}}{100}\right) \times \text{Quantity} \]
So, \(16\% \text{ of } 25 \text{ liters} = \left(\frac{16}{100}\right) \times 25\).
b) If 4% of a number is 72, you can find the number by setting up the equation:
\[ \left(\frac{4}{100}\right) \times \text{Number} = 72 \]
Solve for the number.
c) To find the ratio of 15 days to 3 weeks, note that there are 7 days in a week. So, \(3 \text{ weeks} = 3 \times 7 = 21 \text{ days}\). The ratio of 15 days to 21 days is \(15:21\), which can be simplified if needed.