Question

in a purse there are 20 rupee note 10rupee and 50 rupee note.the number of rupee 50 note exceed two time the 10 rupee note by one .the number of rupee 20 note are 5 less than the number of rupee 10 note. if the total value of money in the purse is rupee 860,find the number of each variety of note

Answer 1

Let the no of 10 rupees note be x
no of 20 rupees note=x-5
no of 50 rupees note =2x+1
total value=860

according to given:
(x×10)+{(x-5)20}+{(2x+1)50} =860
10x+20x-100+100x+50=860
130x-50=860
130x=860+50
130x=910
x=910/130
x=7

no of 10 rupees note =x=7
no of 20 rupees note=x-5=7-5=2
no of 50 rupees note=2x+1=2×7+1=14+1=15