Study the given table and answer the question that follows.
The information related to the sale (in rupees) of different items of a baker’s shop in one day is given in the table.

Items	Ordinary bread	Fruit bread	Cakes and pastries	Biscuits	Others
Sales (in rupees)	400	320	210	120	100
Customers	40	16	14	12	4

What would be the maximum amount of increase in sales for the baker, if all customers who bought any type of bread would ALSO have bought either Cakes and Pastries OR biscuits?

Correct option is D

Given:

​The information related to the sale (in rupees) of different items of a baker's shop in one day​

Solution:

Total customers who bought any type of breads = 40 + 16 = 56

Amount of cakes and pastries each = $$\frac{210}{14}$$​= Rs. 15

Amount of biscuit each = $$\frac{120}{12}$$​ = Rs. 10

To get the maximum amount we need to work on maximum amount between cakes and pastries, and biscuits

So, maximum amount of sales increase = 56 × 15

=> Rs. 840

Thus, the required answer is 840.