#4290. The height of 5 boys is recorded as 146 centimeters, 154 centimeters, 164 centimeters, 148 centimeters, and 158 centimeters. What is the average height of all these boys?

]]>#4289. The average age of 80 girls was 20 years, the average age of 20 of them was 22 years and that of another 20 was 24 years. Find the average age age of the remaining girls.

]]>The solution #4287 is correct. Neat work, Monox D. I-Fly!

#4288. Ronit's age is 10 years more that Rohit's age. Also, Ronit was twice old as Rohit 15 years ago. What will be the age of Ronit 6 years after?

]]>The solution #4286 is correct. Excellent, Monox D. I-Fly!

#4287. The average weight of 25 students is 16 kilograms. The average weight of the first 12 students is 14 kilograms and the last 12 students is 17 kilograms. Find the weight of the thirteenth student.

]]>#4286. The respective ratio of the ages of son, mother, father, and grandfather is 2:7:8:12. The average of the son and mother is 27 years. What will be the mother's age after 7 years?

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#4285. The average height of 16 students is 142 centimeters. If the heights of the teacher is included, the average height increases by 1 centimeter. Find the heights of the teacher.

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#4284. The average weight of 15 oarsman in a boat is increased by 1.6 kilograms when one of the crew , who weighs 42 kilograms is replaced by a new man. Find the weight of the new man in kilograms.

]]>#4283. Find the average of the first 20 multiples of 7.

]]>#4282. The average of 9 consecutive positive integers is 63. Find the product of the largest and smallest integers.

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

#4281. Average weight of 19 men is 74 kilograms, and the average weight of 38 women is 63 kilograms. What is the average weight (rounded off to the nearest integer) of all the men and the women together?

]]>#4280. Average of five numbers is 61. If the average of the first and the third numbers is 69 and the average of the second and fourth is 69, what is the fifth number?

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#4279. The average age of a woman and her daughter is 19 years. The ratio of their ages is 16:3 respectively. What is the daughter's age?

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