Category	Wages in ₹ per day	No. of workers
A	50	2
B	60	4
C	70	8
D	80	12
E	90	10
F	100	6
G	110	8

(i) Calculate the mean wage, correct to nearest rupee.

(ii) If the number of workers in each category is doubled, what would be the new mean wage?

(i) We construct the following table:

Mean = $\dfrac{\text{Total wage}}{\text{No. of workers}} = \dfrac{∑f$ixi}{∑f_i} = \dfrac{4240}{50} = 84.8

Correcting to nearest rupee mean = ₹ 85

Hence, the mean wage is ₹ 85.

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

New total wage = 4240 × 2 = 8480 and number of workers = 50 × 2 = 100.

Mean = $\dfrac{\text{New total wage}}{\text{No. of workers}} = \dfrac{8480}{100}$ = 84.8

Correcting to nearest rupee mean = ₹ 85

Hence, the new mean wage is also ₹ 85.