Ib a bag there are coins of 25p , 10p ,and 5p in the ratio of 1:2:3. if there are rs 30 in all , how many 5 p coins
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1 Rupee = 100 paise
30Rs = 3000 paise
25p : 10p : 5p = 1 : 2 : 3
25*X + 10*2X + 5*3X = 3000
60X = 3000
X = 50
25*50 = 1250
10*2*50 = 1000
5*3*50 = 750
sum of 1250,1000,750 is 3000. Just to verification
750 is the number of paise which we got adding all the 5 paise coins
so number of 5 paise coins = 750/5 = 150 coins.
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