Question

a bag contains 25 paisa and 50 paisa coins whose total value is Rs 30. If the number of 25 paisa coin is 4 times that of 50 paisa coins, find the number of each type of coins

Answer 1

Let the number of 25 paisa's coin be x and 50 paisa's coin be y

ATQ,
25x+50y=3000 (30 Rs. = 3000 paise)
=> x+2y=120 ____(1)
and,
x=4y ____(2)
putting value of x in eq (1)
4y+2y=120
6y=120
y=20
putting y=20 in (2)
x=80
Hence
Number of 25 paisa's coin is 80 and 50 paisa's coin is 20