A dealer allows 20 percent discount for cash payment and gain 20 per cent find the cost price of the radio marked rs 420
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3 unit = 420
1 unit = 420/3 = 140
cp 2 unit = 2 × 140 = 280 will be the answer
1 unit = 420/3 = 140
cp 2 unit = 2 × 140 = 280 will be the answer
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