Question

to promote the launch of a new cadbury s chocolate bar they are offering a buy four,get one free deal.If each chocolate bar costs thirty rupees,how much would ten chocolate bars cost?

Answer 1

Given,

Price of one chocolate bar = Rs. 30

We get 1 free chocolate bar for buying 4 chocolate bars.

To find,

Total price of ten chocolate bars.

Solution,

Now,we get a free chocolate bar for the purchase of four chocolate bars.

So,

Price of 4 chocolate bars = Price of 5 chocolate bars

[Price of the free chocolate bar is zero.]

Now,

Price of 5 chocolate bars = 4 × Price of one chocolate bar = 4×30 = Rs. 120

Price of 10 chocolate bars = 2 × Price of five chocolate bars = 2 × 120 = Rs. 240

Hence,the cost of 10 chocolate bars is Rs. 240.