Question

a) Principal = 5000, Interest = 1500. Time = 3 years​

Answer 1

Answer:

5724

Step-by-step explanation:

1st year

Principal, P=Rs.5000

Time, T=1 year

Rate of interest ,R=6%

∴simple Interest, SI=100PTR=1005000×10×6=Rs.300

∴Amount=P+SI=Rs.5300

2nd year

Principal = Amount of 1st year=Rs.5300

Rate of interest =8%

Time =1 year

∴ Interest =1005300×1×8=Rs.424

∴ Amount =Rs.(5300+424)=Rs.5724

The interest of 2nd year is the required compound interest. So, C.I=rs.424 and the required amount is Rs.5724

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Answer 2

Answer:

Rate = 10% per annum

Step-by-step explanation:

Simple Interest (SI) = Rs.1500

Principal (P) = Rs.5000

Time (T) = 3 years

SI = PRT/100

=> 1500 = 5000×R×3/100

=> R = 10% per annum