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NTSE Sample Paper NTSE SAT Practice Test-16

  • question_answer
    A man invested Rs. 1000 on simple interest at a certain rate percent and another sum of Rs. 1500 at 2% higher than the first rate. The total interest in three years is Rs 390. What is the lower rate of interest?           

    A) 4%      

    B) 5%          

    C) 6%                               

    D) 8%         

    Correct Answer: A

    Solution :

    [a] Annual interest = Rs \[390\div 3\]= Rs. 130. Let the rate be \[x%\] \[\Rightarrow x%\text{ }of\text{ }1000+\left( x+2 \right)%\text{ }of\text{ }1500=130\] \[\Rightarrow x=4\]                    


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