1.  The cost of 7 tables and 12 chairs is ₹ 48,250. What is the cost of 21 tables and 36 chairs ?
A. ₹ 1,44,750
B. ₹ 2,35,745
C. ₹ 89,489
D. ₹ 74,256

Answer: Option A

Explanation:

3T+12C = 48,250----(1)

21T+36C = ?

multiply eq (1) with 3

i.e, = 3( 7T + 12C ) = 48,250*3

21T+36C = ₹ 1,44,750/-