A) 20%
B) 15%
C) 18%
D) 25%
Correct Answer: A
Solution :
Let the rate of second discount \[=x%\] |
After 15% discount, |
Price of pen\[=\frac{85}{100}\times 12\]= Rs. 10.20 |
Now, \[10.20-8.16\]= Rs. 2.04 |
It is second discount. |
\[\therefore \] \[\frac{x}{100}\times 10.20=2.04\] |
\[\Rightarrow \] \[x=\frac{2.04\times 100}{10.20}\] |
\[\Rightarrow \] \[x=\frac{204}{10.20}\] |
\[\Rightarrow \] \[x=20%\] |
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