A machine is used for making rubber balls and makes 500 balls in 30 minutes.How many balls will it make in 3,1\2 hrs
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no of balls in 30 mint are 500
no of mint in 3,1/2 are 210
so no of balls in 210mint are=500*7=3500
no of mint in 3,1/2 are 210
so no of balls in 210mint are=500*7=3500
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