Question : If two mixers and one T.V cost Rs. 700. While two T.Vs and one mixer cost Rs. 980. The value of one T.V is:
Option 1: Rs. 420
Option 2: Rs. 400
Option 3: Rs. 450
Option 4: Rs. 480
Correct Answer: Rs. 420
Solution :
Let the T.V be denoted by T and the mixer is denoted by M.
2M + T = 700
2T + M = 980
Adding both equations:
2T + M + (2M + T) = 980 + 700
⇒ T + M = $\frac{1680}{3}$ = 560
Again,
2T + M = 980
⇒ T + T + M = 980
⇒ T + 560 = 980
$\therefore$ T = 420
$\therefore$ Value of one TV is Rs. 420.
Hence, the correct answer is Rs. 420.
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