Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-4

  • question_answer
    The simple interest accrued in 3 years on a principal of Rs. 25,000 is three-twentieth of the principal. What is the rate of simple interest p.c.p.a?

    A)  5                   

    B)  4

    C)  6                   

    D)       3

    Correct Answer: A

    Solution :

     Simple interest \[=\frac{3}{20}2500\] Rs. 3750 \[\therefore \] \[Rate=\frac{S.I.\,\,\,\,100}{\Pr incipal\times Time}\]             \[=\frac{3750\,\,\,\,100}{25000\times 3}=5%\] per annum Quicker Approach S.I. \[=\frac{3}{20}\] Principle \[\therefore \] \[\frac{S.I.}{\Pr incipal}=\frac{3}{20}\] \[\therefore \] \[Rate=\frac{S.I.}{\Pr incipal}\,\,\,\frac{100}{Time}\] \[=\frac{3}{20\,}\,\,\,\,\frac{100}{3}=5%\]   per annum

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