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 4 of 10.
Debjit Dey said:
7 years ago
I think the answer is 35.
Kishan Patel said:
7 years ago
I agree with you @Sooraj.
Jay said:
7 years ago
35 is the correct answer according to me.
Ashwini said:
7 years ago
The Answer must be 350.
Sooraj said:
7 years ago
SI=P * R/100 * T,
1750=P * R/100 * T,
When R increase by 2%.
R become 1.02R,
new SI = P * 1.02R/100 * 7,
= P * R/100 * 7 * 1.02,
= 1750 * 1.02,
= 1785.
Increase in SI = 1785-1750 = 35.
1750=P * R/100 * T,
When R increase by 2%.
R become 1.02R,
new SI = P * 1.02R/100 * 7,
= P * R/100 * 7 * 1.02,
= 1750 * 1.02,
= 1785.
Increase in SI = 1785-1750 = 35.
Aakash said:
7 years ago
The answer should be 35.
Given:
p*r*7/100 = 1750.
According to question;
new rate = r+2%of r.
new rate = r+0.02*r.
new rate = 1.02*r.
Hence new SI = p*1.02*r*7/100,
new Si = 1.02*p*r*7/100,
new Si = 1.02*1750,
= 1785.
Difference = 1785-1750 = 35.
Given:
p*r*7/100 = 1750.
According to question;
new rate = r+2%of r.
new rate = r+0.02*r.
new rate = 1.02*r.
Hence new SI = p*1.02*r*7/100,
new Si = 1.02*p*r*7/100,
new Si = 1.02*1750,
= 1785.
Difference = 1785-1750 = 35.
Manoj said:
7 years ago
Can we consider the amount as 1000 and calculate the interest. As for one year S.I is 250. So we get the rate of interest as 25. And if we add two percent to it and get S.I it will be 270. 270x7 will give you 1890. So 1890-1750 should give you 140. Then Why it can't be determined?
Narendra said:
8 years ago
2% increase in interest- here interest is simple interest because we never call rate of interest as interest.
So answer is 2% of interest= (2% of 1750) =35 given, interest=1750.
So answer is 2% of interest= (2% of 1750) =35 given, interest=1750.
Pappu das said:
8 years ago
Correct answer - c - 350, how.
In 7 yr SI - RS. 1750
In 1 yr SI - RS . 250, so interest increase by R - 10%.
Get principal through formula - P*R*T/100,
1750 = P * 10 * 7 /100.
P = 2500.
So, increase rate of interest by 2% , ( 10%+2%) = 12 %.
SI at 12 % interest rate on 7 years on same principal = 2100,
Finally - SI at 12% - SI at 10 %.
2100 - 1750 = 350 answer.
In 7 yr SI - RS. 1750
In 1 yr SI - RS . 250, so interest increase by R - 10%.
Get principal through formula - P*R*T/100,
1750 = P * 10 * 7 /100.
P = 2500.
So, increase rate of interest by 2% , ( 10%+2%) = 12 %.
SI at 12 % interest rate on 7 years on same principal = 2100,
Finally - SI at 12% - SI at 10 %.
2100 - 1750 = 350 answer.
Reetu said:
8 years ago
According to me, the answer is Rs 175.14.
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