Question

There are some 100 rupee notes. 50 rupee notes are twice the
100 rupee notes and 20 rupee notes are twice the 50
notes. Their total value is 560. How many more 20 rupee
are there than 100 rupee notes ?
(1) 9
(2) 8
(3) 6
(4) 4 show by step​

Answer 1

let 100 rupee note be x

then,

50 rupee note =2x

20 rupee note = 2(2x)=4x

therefore answer is d

since,

20 rupees note are 4 time the 100 rupee note.