Cost of 2 tables & 3 chairs is 340 but table cost 20 more than chair . It's equation .
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cost of one table=x
cost of one chair=y
but
x=y+20
3y+2(y+20)=340
hope it helps you
cost of one chair=y
but
x=y+20
3y+2(y+20)=340
hope it helps you
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