25% ඞෟ෽෮෪ ෤෡෮෤෠෮෣෮ ෣෣ ෤෡෮෣෮.

Step 1: Convert the percentage to a fraction by dividing by 100. 25\% = (25)/(100) Step 2: Simplify the fraction. (25)/(100) = (1)/(4) The final answer is (1)/(4). --- Step 1: Convert the whole number to a fraction with the same denominator. 3 = (3 × 5)/(5) = (15)/(5) Step 2: Add the fractions. (3)/(5) + (15)/(5) = (3+15)/(5) = (18)/(5) The final answer is (18)/(5). --- Step 1: Recognize the relationship between the given multiplication and the required multiplication. Given: 273 × 31 = 8463. We need to find 0.031 × 2.73. Notice that 0.031 = 31 × 0.001 and 2.73 = 273 × 0.01. Step 2: Rewrite the expression using the given numbers and decimal factors. 0.031 × 2.73 = (31 × 0.001) × (273 × 0.01) 0.031 × 2.73 = (273 × 31) × (0.001 × 0.01) Step 3: Substitute the given product and multiply the decimal factors. 0.031 × 2.73 = 8463 × 0.00001 0.031 × 2.73 = 0.08463 The final answer is 0.08463. --- i) Step 1: List all the unique letters in the word ANURADHAPURA. The unique letters are A, N, U, R, D, H, P. The elements of the set B are A, N, U, R, D, H, P. ii) Step 1: Count the number of unique elements in the set B. There are 7 unique letters. So, n(B) = 7. --- Step 1: Add the time difference to the Sri Lankan time. Sri Lanka time: 9:15 AM on 2025-06-15 Time difference: +10 hours 9:15 AM + 10 hours = 19:15 Step 2: Convert the 24-hour format time to 12-hour format. 19:15 is 7:15 PM. The date remains the same. The time in Sydney will be 2025-06-15, 7:15 PM. --- Step 1: Find the square root of 576. We know that 20^2 = 400 and 30^2 = 900. The number ends in 6, so its square root must end in 4 or 6. Let's test 24: 24 × 24 = 576 The final answer is 24. --- Step 1: Recall the conversion factor between tonnes (t) and kilograms (kg). 1 t = 1000 kg Step 2: Multiply the given value in tonnes by the conversion factor. 7.875 t × 1000 kgt = 7875 kg The final answer is 7875 kg. --- Step 1: Calculate the cube of -2. (-2)^3 = (-2) × (-2) × (-2) Step 2: Perform the multiplication. (-2) × (-2) = 4 4 × (-2) = -8 The final answer is -8. --- Step 1: Calculate the area of ABC using the base BC and its corresponding height AE. Area = (1)/(2) × base × height Area = (1)/(2) × BC × AE Area = (1)/(2) × 12 cm × 5 cm Area = 30 cm^2 Step 2: Use the calculated area and the other given height CD to find the length of its corresponding base AB. Area = (1)/(2) × AB × CD 30 cm^2 = (1)/(2) × AB × 6 cm Step 3: Solve for AB. 30 = 3 × AB AB = (30)/(3) AB = 10 cm The final answer is 10 cm. --- Step 1: Identify the angles in the right-angled triangle. One angle is 90^ (right angle). One acute angle is 35^. The other acute angle is x^. Step 2: Use the property that the sum of angles in a triangle is 180^. x^ + 35^ + 90^ = 180^ Step 3: Solve for x^. x^ + 125^ = 180^ x^ = 180^ - 125^ x^ = 55^ The final answer is 55^. --- Step 1: Let the monthly salary be S. According to the problem, 5% of the monthly salary is Rs. 4000. 5\% of S = 4000 Step 2: Convert the percentage to a fraction and set up the equation. (5)/(100) × S = 4000 Step 3: Solve for S. S = 4000 × (100)/(5) S = 4000 × 20 S = 80000 Mr. Perera's monthly salary is Rs. 80000. Drop the next question! 📸