A) 5%
B) 6%
C) 8%
D) 10%
Correct Answer: A
Solution :
If rate of interest of R% per annum, then \[\text{SI=}\frac{\text{Principal}\,\text{ }\!\!\times\!\!\text{ }\,\text{Time}\,\text{ }\!\!\times\!\!\text{ }\,\text{Rate}}{\text{100}}\] \[\therefore \]\[\frac{6000\times 2\times R}{100}+\frac{1500\times 4\times R}{100}=900\] \[\Rightarrow \]\[120R+60R=900\] \[180R=900\]\[\Rightarrow \]\[R=\frac{900}{100}\]\[\Rightarrow \]\[R=5%\]You need to login to perform this action.
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