Question
The average wage of a group of 49 labourers is Rs. 650.
If 4 persons receiving average wage of Rs. 500 leave the group and 2 persons receiving average wage of Rs. K join the group, then the average wage of the group increases by Rs. 46. Find the value of ‘K’.Solution
Total wage of 49 labourers in the initial group = 49 × 650 = Rs. 31850 New average wage of the group = 650 + 46 = Rs. 696 New number of labourers in the group = 49 – 4 + 2 = 47 So, according to the question, 31850 – 4 × 500 + 2K = 696 × 47 Or, 31850 – 2000 + 2K = 32712 Or, 29850 + 2K = 32712 Or, 2K = 32712 – 29850 = 2862 Or, K = (2862/2) = 1431
- Find the wrong number in the given number series.
12, 20, 31, 45, 62, 84 81, 154, 124, 197, 167, 235
In each of the following giving number series, a wrong number is given. Find out the wrong number?
46 23 23 34.5 70 172.5
...- Find the wrong number in the given number series.
10, 19, 3, 28, 5, 54 14Â Â Â Â 15Â Â Â Â Â 24Â Â Â Â Â Â 50Â Â Â Â Â Â 98Â Â Â Â Â 179
...Find the wrong number in the given number series.
2, 3, 5, 8, 13, 22, 34Find the wrong number in the given number series.
- 71, - 7, 43, 78, 103, 119
66, 115, 34, 155, 14, 211
11, 12, 20, 58, 234, 1168
Find the wrong number in the given number series.
21, 42, 84, 116, 132, 264
