Question

24
A contractor employed 18 labourers at Rs.12 each per day. 10 labourers at
Rs 13.50 each per day. 5 labourers at Rs 25 each per day and 2 labourers at
Rs 42 each per day. The average wages paid is_
(a) Rs 16
(b) Rs 20
(c) Rs 24
(d) Rs 28
​

Answer 1

Sum of observations = (12 * 18) + (10 * 13.5) + (5 * 25) + (2 * 42) = 216 + 135 + 125 + 84 = Rs. 560

No. of observations = 18 + 10 + 5 + 2 = 35 laboures

Average = Sum of observations/ Number of observations

= 560/35

= Rs.16

Answer = (a) Rs.16

Answer 2

Rs 16

hop it's helpful.....