Question

If the cost of 60 chocolates is ₹300, then what is the cost of 15 chocolates?

• A. ₹100
• B. ₹50
• C. ₹150
• D. ₹75

Answer 1

The correct option is D ₹75

Given:
Cost of 60 chocolates $=₹300$
Cost of 15 chocolates $=?$

Half of 60 chocolates is 30 chocolates and half of 30 chocolates is 15 chocolates.
Half of half which is quarter $\left(\frac{1}{4}\right)$ of 60 chocolates is 15 chocolates.

So, cost of 15 chocolates is nothing but quarter $\left(\frac{1}{4}\right)$ of cost of 60 chocolates.

Half of ₹300 is ₹150.
Half of ₹150 is ₹75.

Half of half which is quarter of cost of 60 chocolates is $₹75$

$\therefore$ Cost of 15 chocolates is ₹75.