1. The problem is to understand and work with percentages: a) 25%, b) 60%, c) 50%, d) 25%. 2. A percentage represents a part out of 100. For example, 25% means 25 out of 100 or $\frac{25}{100} = 0.25$. 3. To convert a percentage to a decimal, divide by 100: $\text{percentage} \div 100 = \text{decimal}$. 4. Applying this to each: - a) 25% = $\frac{25}{100} = 0.25$ - b) 60% = $\frac{60}{100} = 0.60$ - c) 50% = $\frac{50}{100} = 0.50$ - d) 25% = $\frac{25}{100} = 0.25$ 5. These decimals can be used in calculations such as finding parts of a number or comparing values.