Question

find the amount and compound interest .principal is 3000, rate 10% and time is 3 years​

Answer 1

Answer:

this question is very simple do questions like this

Simple Interest I=100PNR

Here for first year,

P=Rs.15,000

N=1 year

R=6 %

So, Interest at the end of 1st year I=10015,000×1×6=Rs.900

And for second year,

P=Rs.15,000+Rs.900=Rs.15,900

N=1 year

R=8% 

I=10015,900×1×8=Rs.1272

And, for third year,

P=Rs.15,900+Rs.1,272=Rs.17,172

N=1 year 

R=10% 

I=10017,172×1×10=Rs.1,717.2

So, total interest =Rs.900+Rs.1,272+Rs.1,717.2=Rs.3,889.20

Answer 2

•Solution

Principal= rs.3000

Rate%=10%

Time=3 years

•For 1st year:

I=(P×R×T)/100

➡ (3000×10×1)/100=rs.300

Amount=P+I

➡ 3000+300=rs.3300

•For 2nd year:

I=(3300×10×1)/100=rs.330

Amount=3300+330=rs.3330

•For 3rd year:

I=(3330×10×1)/100=rs.333

Amount =3330+333=rs.3663

C.I.=A3-P1

➡3663-3000=rs.663

So rs.663 is the compound interest on rs.3000 for 3 years at the rate of 10%

Hope it helps you....