If two mixers and one T.V. cost Rs. 700. While two T.V.s and one mixer cost Rs. 980. The value of one T.V. is :
Answer & explanation
Correct answer: option 1
Let the cost of one mixer = Rs.x
and the cost of one T.V. = Rs.y
Then, according to the question
2x + y = 700 ..........(i)
x + 2y = 980 ...........(ii)
Solving the eq. (i), (ii)
Multiply eq. (ii) by 2
2x + y = 700
2x + 4y = 1960
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3y = 1260 or y = 420
The cost of one T.V. = Rs. 420