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 3 of 3.
Priya said:
1 decade ago
How do you know when to use the right formulas?
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