In certain code 'BOARD' is written as '54#12' and 'MORE' is written as '941$'. How is 'DREAM' written on that code?

21$#9

Respective codes have been assigned to the corresponding letters as follows:

B = 5, O = 4, A = #, R = 1, D = 2

M = 9, O = 4, R = 1, E = $

So, according to the above codes, code for DREAM will be as follows:

21$#9