How long (in yrs) will Latish have to wait before her Rs. 3000 invested at 5% earns Rs. 750 in simple interest?
6
5
8
None of these
S.I = PRT100
750 = 3000 x 5 x T100
T = 5
How many years does John need to invest Rs.8000 at 8% to earn Rs. 640 in simple interest?