the simple interest on certain sum of 3 years and 9 months at 15% per annum is ₹ 1200 less than the simple interest on the same for 4 years and 8 months at 12 % per annum. find the sum (in₹).
plz give correct solution.
Answers
Answer:
4,80,000
Step-by-step explanation:
Let the sum be x
According to the question:
=> x × 12 × 56/ 100×12 - x × 15 × 45/100 ×12 =1200
=> 672x - 675x / 1200 = 1200
=> -3x = 14,40,000
=> x = 14,40,000/ -3
= 4,80,000( Here we have to put the greater number's symbol).
Answer:
Let the sum be 100x,
SI = sum × rate × time/100
The simple interest on a certain sum for 3 years at 8% p.a,
⇒ SI = 100x × 3 × 8/100 = 24x
The simple interest on a certain sum for 2 years at 9% p.a,
⇒ SI = 100x × 2 × 9/100 = 18x
The simple interest on a certain sum for 3 years at 8% p.a Is Rs. 90 more than simple interest at 9% p.a for 2 years on the same sum,
⇒ 6x = 90
⇒ x = 15
∴ Sum, 100x = Rs. 1500