TS Police SI Mains 2018 Arithmetic and Reasoning

Question 65

An amount of Rs. 5,00,000/- becomes Rs. 5,51,250/- on some compound interest compoundedhalf-yearly in one year. Then the rate of compoundinterestis

Solution

Let the rate of interest be 2R% p.a. and let $$1+\frac{R}{100}=m$$

Hence, by the given data:
$$551250=5,00,000\cdot m^2$$
$$m^2=1.1025$$
$$m=1.05$$
$$R=5$$
Hence, rate of interest = 2R = 10% p.a. 


Create a FREE account and get:

  • Download Maths Shortcuts PDF
  • Get 300+ previous papers with solutions PDF
  • 500+ Online Tests for Free

cracku

Boost your Prep!

Download App