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 6 of 10.
Anshul Agrawal said:
8 years ago
Correct answer is 35 as interest for one year will be 250 then increase with 2% lead to 255.
Then for 7 years, it will be 255*7=1785.
So, difference between interest will be 1785-1750=35.
Then for 7 years, it will be 255*7=1785.
So, difference between interest will be 1785-1750=35.
Swati said:
8 years ago
Correct answer is 35.
Saumya said:
8 years ago
35 is the correct answer.
Megha said:
8 years ago
Why don't we assume 100 as a principal?
Can anyone answer this?
Can anyone answer this?
Tarun singh said:
8 years ago
35 is correct ans
Tarun singh said:
8 years ago
1750 = pr7/100.
Value of pr/100 = 250 from above.
Now r is 2% more.
S.I = p(1.02r)7/100.
S.I = 7.14pr/100.
Substitute the value of pr/100 in above,
S.I = 7.14*250 = 1785.
So difference = 1785-1750 = 35.
Value of pr/100 = 250 from above.
Now r is 2% more.
S.I = p(1.02r)7/100.
S.I = 7.14pr/100.
Substitute the value of pr/100 in above,
S.I = 7.14*250 = 1785.
So difference = 1785-1750 = 35.
Amu said:
8 years ago
Actually, we have to find just amount of how much earned not a rate of interest so 35 answer is correct.
Reetu said:
8 years ago
According to me, the answer is Rs 175.14.
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.
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.
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