In a bag, there are coins of 25 paise, 10 paise and 5 paise in the ratio of 1 : 2 : 3. If there are Rs.30 in all, how many 5 paise coins are there?
Let the number of coins of 25, 10 & 5 Paise be p : 2p : 3p.
Total value in Paise is $${30}\times{100} = 3000$$
(25p + 20p + 15p) = 60p
So p = $$\frac{3000}{60} = 50$$
therefore number of 5paise coins is 3p = $${3}\times{50}$$ = 150 coins.
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