Question

If 3 chairs and 2 tables cost Rs. 12000 and 5 chairs and 3 tables cost Rs. 19000, then what is the cost of 2 chairs and 2 tables?

Answer 1

Answer:

Explanation:

WE WILL ASSUME C FOR CHAIRS AND T FOR TABLES

3C+2T=12000 -----EQUATION 1

5C+3T=19000------EQUATION 2

NOW TO SOLVE THESE MULTIPLY EQUATION 1 BY 5 AND EQUATION 2 BY 3. WE DID THIS TO CALCULATE COST OF TABLE

15C+10T=60000

15C+9T  =57000

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        T    =  3000

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COST OF 1 TABLE IS RS 3000

PUT THIS VALUE IN EITHER EQUATION 1 OR 2

3C+2*3000=12000

3C=12000-6000

3C=6000

C=2000

COST OF 1 CHAIR IS RS 2000

COST OF 2 CHAIRS=2*2000=4000

COST OF 2 TABLES=2*3000=6000

TOTAL COST=4000+6000= RS 10000