Question

Tariq changed 200rs into 5rs, 20rs and 50rs notes if the number of 5rs notes was double the number of 20rs notes and the 50rs notes were one-fiftg the 20rs notes how many notes of each denomination did he get

Answer 1

let us take the number of 20rs notes=x
number of 5rs notes =2x
number of 50rs note=x/5
total amount charged=200

200=x+2x+x/5
200×5=4x
1000=4x
x=1000/4
x=250

so,
number of 5rs note =2x=2×250=500
number of 50rs note =x/5=250/5=50
therefore he gets fivehundred 5 rs note , two fifty 20rs note and fifty 5rs note respectively.