Seven chairs and three tables together cost ₹ 7400, three chairs and five tables together cost ₹ 5400. The total cost (in ₹) of 1 chair and 2 tables is:

Let $c$ = Cost of 1 chair (in ₹)

Let $t$ = Cost of 1 table (in ₹)

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From the given information:

Seven chairs and three tables cost ₹7400:

$7c + 3t = 7400$ ... (Equation 1)

Three chairs and five tables cost ₹5400:

$3c + 5t = 5400$ ... (Equation 2)

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To eliminate $t$, multiply Equation 1 by 5 and Equation 2 by 3:

$35c + 15t = 37000$ ... (Equation 3)

$9c + 15t = 16200$ ... (Equation 4)

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Subtracting Equation 4 from Equation 3:

$35c + 15t - (9c + 15t) = 37000 - 16200$

$26c = 20800$

$c = 800$

Therefore, cost of 1 chair = ₹800

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Substituting $c = 800$ into Equation 1:

$7(800) + 3t = 7400$

$5600 + 3t = 7400$

$3t = 1800$

$t = 600$

Therefore, cost of 1 table = ₹600

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The total cost of 1 chair and 2 tables:

$c + 2t$

$= 800 + 2(600)$

$= 800 + 1200$

$= 2000$

Therefore, the total cost of 1 chair and 2 tables is ₹2000.