Aptitude - Simple Interest - Discussion
Discussion Forum : Simple Interest - General Questions (Q.No. 13)
13.
A certain amount earns simple interest of Rs. 1750 after 7 years. Had the interest been 2% more, how much more interest would it have earned?
Answer: Option
Explanation:
We need to know the S.I., principal and time to find the rate.
Since the principal is not given, so data is inadequate.
Discussion:
97 comments Page 9 of 10.
Vikramjeet said:
1 decade ago
Hey friends it was said that when no principal amount given then take 100 =p so why we can't write this value.
Waseem Khan said:
1 decade ago
I think 245 is correct as they asked for Increase in interest. So 2% of total interest earned for 7 year is 245. Please clarify me if it is wrong one.
Satyajit dash said:
1 decade ago
Hi @Anusha,
As in question given, 2% more interest than the first case,
So, rate of interest = r+(2r/100) = 102r/100.
Hope understood.
As in question given, 2% more interest than the first case,
So, rate of interest = r+(2r/100) = 102r/100.
Hope understood.
Anusha said:
1 decade ago
@Satyajit das.
You said that si= (p*102/100*R*7)/100.
How it will come?
Mainly I want the number 102 from where it has come?
That equation 2 is also same doubt.
Can you explain me briefly?
You said that si= (p*102/100*R*7)/100.
How it will come?
Mainly I want the number 102 from where it has come?
That equation 2 is also same doubt.
Can you explain me briefly?
Satyajit Das said:
1 decade ago
1750 = PR7/100.
=>PR = 25000-----(1).
Again,
SI = (P*102/100*R*7) / 100.
=>PR = (100*100*SI) / 7*102------(2).
By equating (1) and (2).
SI = 1785.
So ans is 1785-1750 = 35.
=>PR = 25000-----(1).
Again,
SI = (P*102/100*R*7) / 100.
=>PR = (100*100*SI) / 7*102------(2).
By equating (1) and (2).
SI = 1785.
So ans is 1785-1750 = 35.
(1)
Vijay said:
1 decade ago
Here the ans is sp=3500
prinicipal amount is same so p1=p2=x,time is same,the rate is different r,2r
p1=p2
sp1*100/t1r2=sp2*100/t2r2
1750/(7*r)=sp/(7*2r)
sp=3500
so sp2-sp1=1750
prinicipal amount is same so p1=p2=x,time is same,the rate is different r,2r
p1=p2
sp1*100/t1r2=sp2*100/t2r2
1750/(7*r)=sp/(7*2r)
sp=3500
so sp2-sp1=1750
Vasanth said:
1 decade ago
If are increased by 2% interest becomes 1.02r.
Prethi said:
1 decade ago
Please anyone correct me if I'm wrong. I solved the problem in following way
let p be the sum and r rate of interest
1750=p*r*7/100..........(1)
Now r if increased by 2% interest becomes 1.2r
Now equation for S.I=p*1.2r*7/100
By multiplying equation 1 by 1.2 on both sides we get
p*1.2r*7/100=1.2*1750=2100
So 2100-1750=350 is the answer
let p be the sum and r rate of interest
1750=p*r*7/100..........(1)
Now r if increased by 2% interest becomes 1.2r
Now equation for S.I=p*1.2r*7/100
By multiplying equation 1 by 1.2 on both sides we get
p*1.2r*7/100=1.2*1750=2100
So 2100-1750=350 is the answer
Dilip Patel said:
1 decade ago
Folks, there is a answer for this question and is Rs.35.
As former persons said that answer depends on Amount or principal. its not so.... please check with different principal amount assumptions and match your answers... always same .. 35 is difference and and second case SI is always 1785, never mind whatever assumptions made, if P is assumed 10000 then R comes out to be 2.5% if P is assumed 5000 then R comes out to be 5%, but SI for 2% more rate always is 1785. so there is fix answer for the question.
As former persons said that answer depends on Amount or principal. its not so.... please check with different principal amount assumptions and match your answers... always same .. 35 is difference and and second case SI is always 1785, never mind whatever assumptions made, if P is assumed 10000 then R comes out to be 2.5% if P is assumed 5000 then R comes out to be 5%, but SI for 2% more rate always is 1785. so there is fix answer for the question.
Praveen Sah said:
1 decade ago
GIven that: (P*R*7)/100 = 1750
Now we have to find : P*(R+2)*7/100 = ?
But we cannot find P and R both from just one equation.
Hence Cannot be determined
Now we have to find : P*(R+2)*7/100 = ?
But we cannot find P and R both from just one equation.
Hence Cannot be determined
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