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ATQ, ({√2305) % of 74.69} × 15.21 - 27.89 × 44.88 + 45.12% of 2399.87 Or, {(√2304) % of 75} × 15 - 28 × 45 + 45% of 2400 ~ ? Or, (48% of 75) × 15 - 1260 + 0.45 × 2400 ~ ? Or, (0.48 × 75) × 15 - 1260 + 1080 ~ ? Or, 36 × 15 - 1260 + 1080 ~ ? Or, 540 - 180 ~ ? So, ? ~ 360
The average age of 25 children and their teacher's age are 20 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
The average age of three children is 20 years. If their ages are in the ratio 1:2:3. Find the age of the youngest child.