Question

What sum of money lent out at 4 ½% per annum for 3 years produce the same interest as the sum of Rs.4500 lent out at 3% for 2½ years ? [3]​

Answer 1

Answer:

Solution:

In second case, Principal (P) = Rs. 900

Rate (R) = 4%, Time (T) = 5 years

∴SI=PRT100=900×4×5100=180Rs.∴SI=\fraction{PRT}{100}=\fraction{900\times4\times5}{100}=180Rs.∴SI=100PRT​=100900×4×5​=180Rs.

In first case, SI = Rs. 180

Rate = 5%, Time = 3 years

∴ Sum = SI×100R×T=180×1003×5=Rs.1200\frac{SI\times100}{R\times T}=\fraction {180\times100}{3\times5}=Rs.1200R×TSI×100​=3×5180×100​=Rs.1200

Step-by-step explanation:

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