On a Rs. 10000 payment order, a person has choice between 3 successive discounts of 10%, 10% and 30%, and 3 successive discounts of 40%, 5% and 5%. By choosing the better one he can save (in rupees)

Answer: Option B

Final price in 1^st case
= 70% of 90% of 90% of Rs. 10000
$$\begin{array}{rl}& =\text{Rs}\text{.}\left(\frac{70}{100}\times \frac{90}{100}\times \frac{90}{100}\times 10000\right)\\ & =\text{Rs}\text{. 5670}\end{array}$$
Final price in 2^nd case
= 95% of 95% of 60% of Rs. 10000
$$\begin{array}{rl}& =\text{Rs}\text{.}\left(\frac{95}{100}\times \frac{95}{100}\times \frac{60}{100}\times 10000\right)\\ & =\text{Rs}\text{. 5415}\end{array}$$
∴ Money saved by choosing the better offer
= Rs. (5670 - 5415)
= Rs. 255