Question

Ashwin had some ₹10 notes and certain number of ₹50 notes in his purse such that there are 50 notes in the purse and the total value is ₹2100. find the number of each type of notes. in equation.

Answer 1

Answer:

10 rupee notes = 10

50 rupee notes = 40

Step-by-step explanation:

let the number of 10 rupee note be 'x'

and number number of 50 rupee note be 'y'.

total number of notes =50

x+y=50-----equation 1

total amount in purse =2100

10x+50y=2100------eqn 2

multiply eqn 1 by 50 and subtract

50x+50y=2500

10x+50y=2100. subtract

(-) (-). (-)

------------------------

40x. =400

x=400\40

x=10

substitute x=10 in eqn 1

x+y=50

10+y=50

y=50-10

y=40