A sum of Rs. 4000 amounts to Rs. 4600 in 5 years at a certain rate of simple interest. What would be the amount, if the rate of interest is increased by 3 %. Choices:
A) Rs. 4900 B) Rs. 5000 C) Rs. 5200 D) Rs. 5600 E) None of these
Explanation:   Principal = Rs. 4000, Amount = Principal + SI = Rs. 4600   SI = Amount – Principal = 4600 – 4000 = Rs. 600   Given : Principal = Rs. 4000, Time = T = 5 years and SI = Rs. 600   SI =PRT/100   600 = 4000 *R * 5/100   600 = 200R   R = 3 % p.a.   Now the new interest rate is = 3% + 3% = 6 % p.a.   SI 3  + 3= 
<gadget id="calculator">3  + 3</gadget>
<output>6</output>
6 % p.a.   SI= PRT/ 100 = 4000 * 6 * 5/ 100 = Rs. 1200   Amount = Principal + SI   = 4000 + 1200= 
<gadget id="calculator">4000 + 1200</gadget>
<output>5_200</output>
5200   ANSWER Rs. 5200
<result>C</result>
A sum of Rs. 4000 amounts to Rs. 4600 in 5 years at a certain rate of simple interest. What would be the amount, if the rate of interest is increased by 3 %.