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When the price of a radio was reduced by 20%, its sale increased by 80%. What was the net effect on the sale?A. 44% increaseB. 44% increaseC. 66% increaseD. 75% increase |
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Answer» Correct Answer - A Net effect `= x + y +(xy)/(100) = - 20 + 80 + ((-20 xx 80))/(100)= 60- 16 = 44%` increase. |
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