In a bag, the number of ₹5 coins is 8 more than the number on ₹10 coins but 20% less than the number of ₹2 coins. If the total amount in the bag is ₹270, what is the number of ₹5 coins?

20

Ratio of number 5Rs to 2Rs coin is  = 4 : 5

So , Number of 10Rs coins = 4x - 8

According to question ,

5×4x + 10×(4x-8) + 2 × 5x = 270

20x + 40x - 80 + 10x = 270

70x = 350

x = 5

Number of 5Rs coins = 4x = 4 × 5 = 20