Question

21. A bag contains 1.600 in the form of 10 and 20 notes. If the ratio between the
numbers of 10 and 20 notes is 2: 3. find the total number of notes in all​

Answer 1

Answer:

let the number of notes of the currency be x

then...

ratio =2x:3x

10(2x) + 20(3x) = 1600

20x+60x = 1600

80x=1600

x = 1600/80

  = 20

Number of 10 notes = 2x20

                                   = 40

Number of 20 notes = 3x20

                                  = 60

Total number of notes = 20+60

                                      = 80

Verification =

Number of 10 notes = 20

So.. 10 x 40 = Rs.400

Number of 20 notes = 60

So... 60x20 = Rs1200

1200+400 = Rs.1600