the cost of pen is Rs 51/4.How many pens can be purchased for Rs 204?
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here one method we can use it direct and Inverse proportion....
cost of one pen = 51/4
cost of x pens = 204
₹ 51/4 -------> 1 pen
₹ 204 -------> x pen
51x/4 = 204×1
51x = 816
x = 816/51
Therefore x = 16
hence 16 pens can be purchased from ₹ 204
cost of one pen = 51/4
cost of x pens = 204
₹ 51/4 -------> 1 pen
₹ 204 -------> x pen
51x/4 = 204×1
51x = 816
x = 816/51
Therefore x = 16
hence 16 pens can be purchased from ₹ 204
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