Question

Sagar board 30 tickets in all of which some cost rupees 15 and raised cost rupees 20 if the total cost of the tickets was rupees 540 how many tickets of rupees 20 were
brought ​

Answer 1

Answer:

20 tickets

Step-by-step explanation:

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Answer 2

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let the no. of 15 rs tickets be x

and 20ra ticket be y

ATQ

x+y=30....(1)

case 2

15x+20y=540 .....(2)

dividing whole equation by 3 we get

3x+4y=108

by elemination method

x+y=30.. X3

3x+4y=108

-3x-3y=-90

_________

0+y= 18

x= 30-18 , x=12

y=18

therefore 18 tickets of 20rs were bought

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