Write equations in two variables for the following situations : a. The total cost of 3chairs and 2 tables is Rs.4500. b. The ratio of measures of angles in linear pairs is 3:7. c. In the purse there are some Rs.10 and Rs.50 notes amounting Rs.200 in all.
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a. 3x + 2y = 4500$
b. 3x/7x = 180°
c. 10x + 50y = 200$
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