#4440. The average of five numbers is 281. The average of first two numbers is 280 and the average of last two numbers is 178.5. What is the third number?

]]>#4439. The average of five consecutive numbers A, B, C, D, and E is 48. What is the product of A and E?

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#4438. The average marks of a student in seven subjects is 41. After re-valuation in one subject, the marks were changed to 42 from 14 and in remaining subjects, the marks remain unchanged. What is the new average marks?

]]>#4437. Find the average of the following set of scores : 566, 455, 231, 678, 989, 342, and 715.

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The solution #4435 is correct. Neat work, Monox D. I-Fly!

#4436. The total age of the ages of a class of 75 girls is 1050, the average age of 25 of them is 12 years and that of another 25 is 16 years. Find the average age of the remaining girls.

]]>#4435. If 47a + 47b = 5452, then that is the average of a and b?

]]>#4434. Average of five consecutive odd numbers, A, B, C, D, and E is 45. What is the product of B and D?

]]>The solution #4431 is correct. Neat work, Monox D. I-Fly!

#4433. At present, Monica is eight times her daughter's age. Eight years from now, the ratio of the ages of Monica and her daughter will be 10 : 3. What is Monica's present age?

]]>#4432. The average age of a man and his son is 48 years. The ratio of their ages is 5 : 3 respectively. What is the son's age?

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#4431. In a mixture of milk and water, the proportion of water by weight was 75%. If 60 grams of this mixture, 15 grams of water was added, what would be the percentage of water?

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The solution #4429 is correct. Neat work, Monox D. I-Fly!

#4430. A sum of money is divided among A, B, C, and D in the ratio of 3 : 4 : 9 : 10 respectively. If the share of C is $2580 more than the share of B, then what is the total amount of money of A and D together?

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The solution #4428 is correct. Excellent, Monox D. I-Fly!

#4429. The ratio of the ages of a father and son is 17 : 7. Six years ago, the ratio of their ages was 3 : 1. What is the father's present age?

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