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In a store window, there was a flat containing boxes of berries having a total weight of 100 kg. An analysis showed that the berries were 99% moisture, by weight. After two days in the sun, a second analysis showed that the moisture content of the berries was only 98%, by weight. What was the total weight of the berries after two days, in kg?

 Jul 10, 2022
 #1
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The total weight was 80 kg.

 Jul 10, 2022
 #2
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I checked my work; its definitely not 80 kg.

 Jul 10, 2022
 #3
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99 kg ==weight of moisture

1 kg ==weight of solids

 

Let the total weight of the berries after 2 days in the sun ==B

 

1 kg  +  0.98B ==B

1kg ==B - 0.98B ==0.02B, solve for B

 

B ==1 / 0.02 ==50 kg - weight of berries after 2 days in the sun.

 Jul 10, 2022

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