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?
Rs. 35
Rs. 245
Rs. 350
Cannot be determined
None of these
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 5 of 10.

Naved said:   9 years ago
All the solution are based on the percentage of a ate of interest. But if you don't know the actual amount how could you say that the 2% of this amount will be this?

Ashik said:   9 years ago
"Had the interest been 2% more, " - S.I is increased by 2% right? not the Rate of Interest (R).

SASIKUMAR said:   9 years ago
ANS : 245.

Interest is increased by 2% more,so (7 years) x 2% = 14%.
Interest is 1750, so now 1750 + 14% = 1995.
The difference between 1995-1750 = 245.

Vivek said:   9 years ago
pr = 1750/7 = 250
r = 250/p.

2% more => 250/p + [250/p]*2%=255/p is the new r.
SI = p * 255/p * 7 = 1785.

1785 - 1750 = 35 rupees more.

Chatrapathi said:   9 years ago
s.i = p * 7 * r/100 = 1750.
If rate of interest increses by 2% then p * 7 * 1.02r/100 = 1750 * 1.02 = 1785.

The extra interest he will get = 1785 - 1750 = 35.

Manish said:   9 years ago
Question is "how much more interest would it have earned?". So we already have simple interest of Rs. 1750.

So, 2% of 1750 will be 35.

Please correct if I'm wrong.

Hemant said:   8 years ago
We have 1750 as interest.
Let say this is our 100% interest so, we have to find 102% interest .
That's it just cross multiply .
100=1750.
102=?
(1750 * 102)/100 = 35 rs.

Manikanta said:   8 years ago
You're right @Depresser.

In the question earlier interest was let it be R%, later part of the question if interest is increased by 2% that means " R+0.02 " not [ R+R * 0.02].

Akhil Subramanian said:   8 years ago
1750 divided by 7 give Interest for one year ie, Rs 250.

Here, 2% of 250 is 5.
So if the interest is increased by 2% then the Interest for one year will 255.
So for 7 years 1785.
Thus the difference will be Rs 35.
(1)

Bhadresh savani said:   8 years ago
B is correct.

2% for 7 years will be 14%.
14% of 1750 is 245.


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