I believe that 2000 rupees is $29.87 US dollars
B. 3x4 design makes a better statement in which the design is 4inches tall and with a diameter of 3 inches
The factors of 40 from that list are 4, 8. and 80. A factor needs to be able to be divided by 40.
If the value was initially v, then after a year it is 0.75v, after 2 years it’s 0.75²v, and so on. So after 6 years it’s 0.75⁶v.
So 0.75⁶v=7500, and v=7500/0.75⁶=$42,139.92 approximately. This is close to $42,140.