A bag contains one rupee, 50 paise and 25 paise coins in the proportion 5 : 7 : 9. If the total amount in the bag is ₹430, then how many 25 paise coins are there?
Answer & explanation
Correct answer: option 2
Denominations - 1rupee : 50 paise : 25 paise
5 : 7 : 9
Total amount = ₹430
(1r x 5) + (0.50r x 7) + (0.25r x 9) = 430
5r + 3.5r + 2.25r = 430
10.75r = 430 ⇒ r = 40
No. of 25 paise coins = 9 x 40 = 360