Category	Wages in ₹ per day	No. of workers
A	500	2
B	600	4
C	700	8
D	800	12
E	900	10
F	1000	6
G	1100	8

(i) Calculate done mean wages correct to the nearest rupees.

(ii) If the number of workers in each categories double what would be the new mean wage?

(i) We construct the following table:

Mean = $\dfrac{Σf$ixi}{Σf_i}

= $\dfrac{42400}{50}$

= 848.

Hence, the mean wage is ₹ 848.

(ii) If the number of workers in each category is doubled then total wage will also be doubled.

New total wage = 42400 × 2 = 84800 and number of workers = 50 × 2 = 100.

Mean = $\dfrac{\text{New total wage}}{\text{No. of workers}}$

= $\dfrac{∑f$ixi}{∑f_i}

= $\dfrac{84800}{100}$​ = 848.

Hence, the new mean wage is also ₹ 848.