Math, asked by dibyakr1998, 2 days ago

9. Mona has 25p coins and 50p coins. The number of 25p coins is thrice the number of 50p coins. If the total value of money is Rs. 75, find the number of 25p and 50p coins she has​

Answers

Answered by doremoan
6

Answer:

Let the number of 50p coin be x and 25p be y

According to question,

x+y=40 (i) and

25x+50y=1250 (ii)

Multipling equation (i) by 25 we get,

25x+25y=1000 (iii)

Subtracting (iii) from (ii) we get,

25x+50y=1250

25x+25y=1000

25y=250

=>y=

25

250

=>y=10

Putting the value of y in equation (i) we get,

x+y=40

=>x=40−10

=>x=30

∴x=30(25 paisa coins)

y=10(50 paisa coins)

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