PSC Questions - 1

Q1. 3 chair and 2 tables cost Rs.700 and 5 chairs and 3 tables cost rs.1100. What is the cost of 2 chair and 2 table?
Answer : Rs.600
3 chair + 2 table = 700 ............(1)
5 chair + 3 table = 1100 ............(2)
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9 chair + 6 table = 2100 ............3*(1)---(3)
10 chair + 6 table = 700 ............2*(1)---(4)
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1 chair = 100 -----------(4)-(3)
there for table = 200
2 chair + 2 table = 200+400 = 600