1.

1). 8.7%2). 9.2%3). 3.15%4). 5%

Answer»

USING the formula,

(100 + G)/100 = TRUE weight/False weight, where G is the GAIN percentage

⇒ (100 + G)/100 = 1000/920

⇒ 100 + G = 108.7

∴ Gain Percent = 8.7%



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