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Divide ₹6800 into two parts so that S.I. on the first part for 3 1 Years at 6% may be equal to 3 the interest on the second part for 3 1 Years at 4% Percent Per annum 3
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- ₹ 2600 ; ₹ 4200
- ₹ 2800 ; ₹ 4000
- ₹ 2500 ; ₹ 4300
- ₹ 2700 ; ₹ 4100
- ₹ 2600 ; ₹ 4200
Correct Option: B
Let the first part be p. then ,
second part = (6800 – p)
| Interest on first part for 3 | years at 6% | |
| 3 |
| = | = | ||
| 100 | 5 |
| Interest on second part for 3 | years at 4% | |
| 2 |
| SI = | |
| 100 |
| SI = ₹ | |
| 50 |
According to the question,
| = | ||
| 5 | 50 |
⇒ 10p = (6800 – p) 7
⇒ 10p = 47600 – 7p
⇒ 17p = 47600
⇒ p = 2800
Hence, first part = ₹ 2800
and second part = ₹ (6800 – 2800) = ₹ 4000.