Question

The banker discount on a bill due 4 month hence at 15% is Rs.420. What is the true discount ?

Answer 1

use formula first

BD = SD × n/12 × R/100 ( n is months n r is rate)

then u will get SD

SD = PW +TD

so u have to find PW now

so
use

SD= PW( 1+ n/12 × r/100)


you will get PW here

then use formula
SD = Pw + TD

this TD= sd-pw


that's it and