The average weight of 21 boys was recorded as 64 kg. If the ...

The average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 kg. What was the teacher’s weight?

Course Name: SQL -Structured Query Language

1] 86 kg
2] 64 kg
3] 72 kg
4] 84 kg

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1 Discuss	The average of 11 players of a cricket team is decreased by 2 months when two of them aged 17 years and 20 years are replaced by two new players. The average age of the new players is- 1] 17 years 1 month 2] 17 years 7 months 3] 17 years 11 months 4] 18 years 3 months Solution
10 Discuss	40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is Rs. 390. The annual income of each executive is Rs. 420. What is the average annual income of all the employees in the factory together? 1] 390 2] 405 3] 408 4] 415 Solution
2 Discuss	The average age of a family of 10 members is 20 years. If the age of the youngest member of the family is 10 years, then the average age of the members of the family just before the birth of the youngest member was approximately. 1] 27.14 years 2] 12.5 years 3] 14.28 years 4] $11\frac{1}{9}$ years Solution
3 Discuss	Find the average of first 97 natural numbers. 1] 47 2] 37 3] 48 4] 49 5] 49.5 Solution
4 Discuss	a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is : 1] $3\left( {\frac{{a + n}}{2}} \right)$ 2] $\left( {\frac{{1 + d}}{2}} \right)$ 3] $\left( {\frac{{a + b + m + n}}{4}} \right)$ 4] $3\left( {\frac{{j + c + n +g}}{4}} \right)$ Solution
5 Discuss	Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent Rs. 8 more than the average expenditure of all the nine. What was the total money spent by them. 1] Rs. 115 2] Rs. 116 3] Rs. 117 4] Rs. 118 Solution
6 Discuss	If the average of 5 consecutive integers is x then, find the average of next to next 5 consecutive integers. 1] x + 5 2] x - 5 3] x + 10 4] x + 25 Solution
7 Discuss	A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points the team scored was : 1] 672 2] 665 3] 645 4] 588 Solution
8 Discuss	A student finds the average of 10, 2 digits numbers. If the digits of one of the numbers interchanged, the average increases by 3.6. The difference between the digits of the 2 digits number is : 1] 4 2] 3 3] 2 4] 5 Solution
9 Discuss	The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years while that of the girls is 15.4 years. What is the ratio of boys to girls in the class? 1] 1:2 2] 2:3 3] 3:4 4] 3:5 Solution
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