New Enroll in RBI Grade B New Batch - Starts on May 21

    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 Rs. 350 Correct Answer Incorrect Answer
    B Rs. 400 Correct Answer Incorrect Answer
    C Rs. 500 Correct Answer Incorrect Answer
    D Rs. 550 Correct Answer Incorrect Answer

    Solution

    ATQ, Set up equations: 3x+2y=700 (3 chairs and 2 tables cost Rs. 700) 5x+3y=1100 (5 chairs and 3 tables cost Rs. 1100) Solve using elimination: Multiply the first equation by 3: 9x+6y=2100 Multiply the second equation by 2: 10x+6y=2200 Subtract to find x: x=100 Find y: Substitute x=100 into 3x+2y=700 to get y=200. Calculate the desired cost: x+2y=100+2(200)=500 Rs. The cost of 1 chair and 2 tables is Rs. 500.

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