Rajesh borrowed Rs. 1500 from Shabnam at some r% for one year and returned Rs. 1725. If he had borrowed same money for 4 years at (r + 5)%, then what is the amount he would have returned?
Rajesh borrowed Rs. 1500 from Shabnam at some r% for one year and returned Rs. 1725. If he had borrowed same money for 4 years at (r + 5)%, then what is the amount he would have returned? Correct Answer Rs. 2700
Given:
Principal is Rs. 1500
Amount is Rs. 1725
And time is 1 year.
Formula used:
S.I. = Amount - Principal
S.I. = (P × r × t)/100
Here, P = Principal
r = Rate
t = Time
Calculation:
S.I. = Rs. 1725 - Rs. 1500
⇒ S.I. = Rs. 225
Again, S.I. = Rs. 1500 × r × 1/100
⇒ 15r = Rs. 225
⇒ r = 15
So, r + 5 = 15 + 5
⇒ (r + 5)% = 20%
Now, S.I. of Rs. 1500 for 4 years at 20%
⇒ Rs. 1500 × 20 × (4/100)
⇒ Rs. 1200
So, amount = Rs. 1500 + Rs. 1200
⇒ Amount = Rs. 2700
∴ Rajesh would have returned Rs. 2700.
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Feb 20, 2025