[QUOTE=aneeqa;1066151]
Quote:
Originally Posted by suhaibqaisar
9. The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is: 31 kg
10. When a number is added to two-thirds of itself, the result is 45. What is the number? 27
11. When a number is added to a number three times as large, the result is 16. What is the number? 4
12. The product is a2b3 and a3b6 is: a5b9
13. The number midway between 103 and 301 is: 202
14. If x = 1, then x9 = ? 1
15. If 4x – 6 = 2x + 8, then x? 7
16. In a continued proportion a : b = b : c, c is called: Third proportion[/QUO
..solve Q 9 of avg by showing the method .regards
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Average of A,B and C = 45
So, 45*3 = 135
Average of B and C = 43
So, 43*2 = 86
C = 135-86 = 55
Hence
Average of B and C - C = 86-55= 31
So B is 31