Civil Engineering Mechanical Engineering Chemical Engineering Networking Database Questions Computer Science Basic Electronics Digital Electronics Electronic Devices Circuit Simulation Electrical Enigneering Engineering Mechanics Technical Drawing

# Aptitude - Simple Interest - Discussion

@ : Home > Aptitude > Simple Interest > General Questions - Discussion

"Everything should be made as simple as possible, but not simpler."
- Albert Einstein
5.

Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?

 [A]. 3.6 [B]. 6 [C]. 18 [D]. Cannot be determined [E]. None of these

Explanation:

Let rate = R% and time = R years.

 Then, 1200 x R x R = 432 100

12R2 = 432

R2 = 36

R = 6.

 Bhavya Y J said: (Fri, Jun 11, 2010 09:59:14 AM) While traveling at uniform speed. U read a two digit no. after one hr the number is reversed order. After another hour the number read is same two digit number. What is the average speed?

 Ppp said: (Thu, Feb 17, 2011 07:21:18 AM) Why should we take R for time why should not T or Something other?

 Sakshi said: (Sun, Mar 6, 2011 09:44:43 PM) You are right Ppp. We can also take x. according to the question R=T.we can take R=T=x R= S.I*100/P*T x=432*100/1200*x x to the power square =36; x= 6

 Vaani said: (Sat, May 7, 2011 08:15:33 AM) As many years as the rate of interest so we taken t=r

 Sanju said: (Fri, May 20, 2011 02:33:57 PM) According to ques we can also take x, y, z it is not a matter.

 Hasmukh Maniya said: (Mon, Jun 13, 2011 08:06:06 AM) But Why we took R two times in this Solution.. We can Take Like R=Rate of Interest and T=Time the Formula is SI=PRT/100 In this Formula if We take 1 year then the ans will be 36 instead of 6. Plz Give me Proper Solution for my biggest Confusion..As Soon As

 Kishan said: (Sat, Sep 17, 2011 06:46:46 PM) Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. Please solve the above sentence.

 Anil said: (Tue, Oct 4, 2011 07:33:11 PM) Actually, I am unable to understand what the question is, can anyone please explain me.

 Lavs said: (Thu, Nov 3, 2011 07:51:58 PM) Hai friends Actually reena took sum of Rs.1200 ie P=1200 and paid simple interest of Rs.432 We are asked to find the rate ie R It is given that, simple interest for as many years as the rate of interest. this line mean that T=R. Or you can asuume R & T to some other variable also ie R=T=x formulato be used is SI=PRT/100 432=1200*R*R/100 (Here i have used T=R) 43200=1200 R square Rsquare=43200/1200 Rsquare=36 R=6 Hope understand... Goood night

 Jagat said: (Sun, Feb 26, 2012 12:26:39 AM) I don't understand how we will we take T=R & what is mean of as many year as the rate of interest give actual mean of this sentence.

 Tejas said: (Sat, May 26, 2012 12:32:43 PM) My Answer is 3.6%. 1200*3. 6% = 43.2 Ok now many years means 10 years So 43.2 * 10 years = 432 Please tell me this is right or wrong, if wrong why?

 Banti Biswal said: (Fri, Jun 29, 2012 11:12:40 PM) Why we take R inplace of T ?

 Rajan Kumar said: (Fri, Aug 31, 2012 02:18:35 AM) Because rate is equal to year they given in question itself. so we took t=r we can also write like r=t=r all are same in this question.

 Gaurav said: (Thu, Feb 21, 2013 11:33:03 AM) Can anyone solve this, by using the following formula, S.I=P*N*R/100, where, S.I=Simple Interest, P=Principal Amount. N= Period of time. and, R= Rate of Interest.