Here are the solutions to the problems: 22. Write $8 \frac{5}{12}$ in 3 decimal places. Step 1: Convert the fractional part to a decimal. $$ \frac{5}{12} = 0.41666... $$ Step 2: Add the decimal to the whole number. $$ 8 + 0.41666... = 8.41666... $$ Step 3: Round the result to 3 decimal places. Since the fourth decimal place is 6 (which is 5 or greater), we round up the third decimal place. $$ 8.41666... \approx 8.417 $$ The value of $8 \frac{5}{12}$ in 3 decimal places is $\boxed{\text{8.417}}$. 23. Convert 308.5% as a decimal. Step 1: To convert a percentage to a decimal, divide the percentage by 100. $$ 308.5\% = \frac{308.5}{100} $$ Step 2: Perform the division. $$ \frac{308.5}{100} = 3.085 $$ 308.5% as a decimal is $\boxed{\text{3.085}}$. 24. After 36% of water leaked from our school tank, 960 litres still remained. How many litres of water leaked? Step 1: Determine the percentage of water remaining in the tank. $$ \text{Percentage remaining} = 100\% - \text{Percentage leaked} $$ $$ \text{Percentage remaining} = 100\% - 36\% = 64\% $$ Step 2: Calculate the total capacity of the tank. We know that 960 litres represents 64% of the total capacity. Let $T$ be the total capacity. $$ 0.64 \times T = 960 $$ $$ T = \frac{960}{0.64} $$ $$ T = 1500 \text{ litres} $$ Step 3: Calculate the amount of water that leaked. $$ \text{Leaked water} = \text{Total capacity} - \text{Remaining water} $$ $$ \text{Leaked water} = 1500 \text{ litres} - 960 \text{ litres} $$ $$ \text{Leaked water} = 540 \text{ litres} $$ Alternatively, calculate 36% of the total capacity: $$ \text{Leaked water} = 36\% \times 1500 \text{ litres} $$ $$ \text{Leaked water} = \frac{36}{100} \times 1500 $$ $$ \text{Leaked water} = 0.36 \times 1500 = 540 \text{ litres} $$ The amount of water that leaked was $\boxed{\text{540 litres}}$. 25. The question "A farmer spent 36,200/- on s during the planting season sh..." is incomplete. Please provide the full question for me to solve it.