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If w is 10% less than x and y is 30% less than z , then wy is what percent less than xz ?

Correct Answer: 37%
ধরি, x = 100 then, w = 100 - 100× 10/100 = 90 আবার, If z = 100 then, y = 100 - 100 × 30/100 = 70 সুতরাং, wy = 90 × 70 = 6300 and xz = 100 × 100 = 10000 Difference = 10000 - 6300 = 3700 Difference in percentage = 3700/10000 × 100% = 37%

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