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3. An alloy of tin and lead is in the ratio of 3: 2. The cost oftin and lead is 50 and Rs. 20 per kg respectively. Find outthe cost of 12 kg of the alloy

Answer»

tin and lead is in 3:2now total 12 kg so individually tin=7.2 kgand lead=4.8 kgnow 1 kg of tin=50 so 7.2 kg=360and 1 kg of lead=20 so 4.8 kg=96

so final cost=360+96=456



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