Q. If the cost of 28 pen is 420. Then what is the cost of 20 pens?
hinanshu39:
300
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the cost of 28 pens = 420 rs
the cost of one pen = 15 rs
the cost of 20 pens = 15 ×20= 300 rs
the cost of one pen = 15 rs
the cost of 20 pens = 15 ×20= 300 rs
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