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
What will come in place of the question mark (?) in the following series?
48, 291, ?, 399, 408, 411
18, 30, 50, 102, 282, ?
- What will come in place of the question mark (?) in the following series?
24, 27, 34, 46, 64, ? 150 Â Â Â 15Â Â Â 3Â Â Â ? Â Â Â Â 0.36Â Â Â Â 0.18
13, 28, ?, 118, 238, 478
3   2    10   ?   17   16
32, 64, 8, ?, 2, 4Â
8, 9, 125, ?, 1331, 169Â
226  231   466  ?  5606  28031    Â
 5, 6, 14, 45, 184, ? Â
