A) 10%
B) 15%
C) 20%
D) 22%
Correct Answer: B
Solution :
List price = Rs. 160 |
Let second discount be r%. |
\[\therefore \]Cost after second discount |
\[=\frac{(100-r)}{100}\times \frac{(100-10)}{100}\times 160=\frac{(100-r)}{100}\times \frac{90}{100}\times 160\] |
\[=(100-r)\times \frac{36}{25}\] |
But cost is Rs. 122.40 |
Given, Rs. 122.40 \[(100-r)\times \frac{36}{25}\] |
\[\frac{122.40\times 25}{36}=100-r\] |
\[\Rightarrow \] \[85=100-r\] |
\[\Rightarrow \] \[r=100-85=15%\] |
You need to login to perform this action.
You will be redirected in
3 sec