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
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)
Similar questions