Correct option is C
Given:
The cost of 18 chairs and 4 tables = ₹7,100
The cost of 18 chairs and 7 tables = ₹7,700
Solution:
Let the cost of one chair be C and the cost of one table be T
From the condition;
18C + 4T = 7100........(1)
18C + 7T = 7,700........(2)
Subtract equation 1 from equation 2:
we get , 3T = 600
so, T = 200
Substituting T = 200 into equation 1;
18C + 4(200) = 7,100
18C + 800 = 7,100
18C = 7,100 - 800 = 6,300
C = = 350
Now, cost of 18 chairs and 5 tables:
18C + 5T = 18(350) + 5(200) = 6,300 + 1,000 = 7,300
The cost of 18 chairs and 5 tables is ₹7,300
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