maths plse help me..
posted by sunil .
In a purse there are 20rupee notes 10rupee notes and 5rupee notes. the number of 5rupee notes exceeds two times the 10rupee notes by one. the 20rupee notes are 5 less than the 10rupee notes. if the total value of the money in the purse is Rs185 find the number of each variety of notes.

Let #10rupee = x, then #5rupee = 2x+1 and #20rupee = x5.
x + (2x+1) + (x5) = 185
Solve for x, then the other expressions.