Aptitude - Simple Interest - Discussion
Discussion Forum : Simple Interest - General Questions (Q.No. 8)
8.
A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is:
Answer: Option
Explanation:
Let the rate be R% p.a.
| Then, |  |
5000 x R x 2 |  |
+ | |
3000 x R x 4 | |
= 2200. |
| 100 | 100 |
100R + 120R = 2200
| R = |
|
2200 | |
= 10. |
| 220 |
Rate = 10%.
Discussion:
21 comments Page 2 of 3.
Vineesh said:
1 decade ago
@priya there is only one formula for simple interest. You can easily use it always just by interchanging terms.
Saji said:
1 decade ago
@Srikanth, very good explanation. I expect such shortcut method from the discussion part keep doing the same.
Kumar said:
9 years ago
5000 * 2 = 10000
3000 * 4 = 12000
------------------------
= 22000
R%= 2200 * 100/22000 * 1 = 10.
3000 * 4 = 12000
------------------------
= 22000
R%= 2200 * 100/22000 * 1 = 10.
(7)
K. Haritha said:
8 years ago
5000*2*r/100+3000*4*r/100=2200,
100r+120r=220r,
220r=2200,
10.
100r+120r=220r,
220r=2200,
10.
(1)
Adil Shaikh said:
8 years ago
Hi,
Thanks everyone for giving such good explanation.
Thanks everyone for giving such good explanation.
Kuldeep singh said:
1 decade ago
From where this 120R came. Please some one tell me.
Priya kuldeep said:
1 decade ago
@Nishant.
You are doing it in a lengthy manner.
You are doing it in a lengthy manner.
Priya said:
1 decade ago
How do you know when to use the right formulas?
Thiru said:
1 decade ago
Hey its the formula of CP.
Arun said:
1 decade ago
By Using SI = (PRT/100).
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