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)

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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)

A200

B255

C400

D433

Nithin ? undefined

Correct answer is: 255

Explanation:

Final price in 1st case
= 70% of 90% of 90% of Rs. 10000

\(\eqalign{ & = {\text{Rs}}{\text{.}}\left( {\frac{{70}}{{100}} \times \frac{{90}}{{100}} \times \frac{{90}}{{100}} \times 10000} \right) \cr & = {\text{Rs}}{\text{. 5670}}{\text{}} \cr}\)

Final price in 2nd case
= 95% of 95% of 60% of Rs. 10000

\(\eqalign{ & = {\text{Rs}}{\text{.}}\left( {\frac{{95}}{{100}} \times \frac{{95}}{{100}} \times \frac{{60}}{{100}} \times 10000} \right) \cr & = {\text{Rs}}{\text{. 5415}}{\text{}} \cr}\)

∴ Money saved by choosing the better offer
= Rs. (5670 - 5415)
= Rs. 255

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Correct answer is: 255 Explanation: Final price in 1st case = 70% of 90% of 90% of Rs. 10000 \(\eqalign{ & = {\text{Rs}}{\text{.}}\left( {\frac{{70}}{{100}} \times \frac{{90}}{{100}} \times \frac{{90}}{{100}} \times 10000} \right) \cr & = {\text{Rs}}{\text{. 5670}}{\text{}} \cr}\) Final price in 2nd case = 95% of 95% of 60% of Rs. 10000 \(\eqalign{ & = {\text{Rs}}{\text{.}}\left( {\frac{{95}}{{100}} \times \frac{{95}}{{100}} \times \frac{{60}}{{100}} \times 10000} \right) \cr & = {\text{Rs}}{\text{. 5415}}{\text{}} \cr}\) ∴ Money saved by choosing the better offer = Rs. (5670 - 5415) = Rs. 255 Nithin ? answered undefined All Comments

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