Question

how long must a sum of rs 14400 be invested at 12% p.a so as to earn an interest of rs 7200?

Answer 1

Answer:

Step-by-step explanation:

SI=(PRT)/100

7200=(14400*12*T)/100

7200=1728*T

7200/1728=T

T=4.1666666666YEARS

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Answer 2

ptr\100=simple interest
where p=principle
t=number of years
r=rate of interest
=14400×12×r\100=7200
=172800r\100=7200
=r=7200\1728
=4.166666 years