Question

3 chairs and 2 tables cost Rs. 700 and 5 chairs and 3 tables cost Rs. 1100. What is the cost of 1 chair and 2 tables?

• A. 350
• B. 400
• C. 550
• D. 500

Answer 1

Answer:

D. 500

$3C+2T=700------(1)$

$5C+3T=1100------(2)$

Multiplying (1) by 3 and (2) by 2 we get

$9C+6T=2100$

$10C+6T=2200$

solving above equation we get,

$9C-10C=2100-2200$

$C=100$

sub 'C' value in (1) we get,

$2T=700-300$

$T=200$

cost of 1 chair and 2 table is,

$=1\times100+2\times200$

$=500$