A boy has rs728 in denomination of rs 2 notes, rs 5 notes and rs 10 notes in the ratio of 3:2:4, respectively. What is the total number of notes he has?

Question

(A)104 (B)127
(C)100 (D)117

Answer 1

Add up the value of each kind of note:

2(3x)+5(2x)+10(4x) = 728

now find x, and the total number of notes is

3x+2x+4x = 9x

Answer 2

or, see how much 1 set of 9 notes is worth: 2*3+5*2+10*4 = 56

728/56 = 13

So there are 13 sets of 9 notes...

Answer 3

117