Answer:
Weight of the bag of grapefruit =
pounds
Step-by-step explanation:
Given :
Total weight of fruits purchased by Lynne =
pounds
Weight of apples purchased =
pounds
Weight of bananas =
pounds
To find the wight of the bag of grapefruit bought.
Solution:
Weight of the bag of grapefruit can be calculated by subtracting the weights of apples and bananas combined from the total weight.
Weight of apples and bananas combined =
pounds
Weight of the bag of grapefruit bought can be calculated as :
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Simplifying by removing parenthesis by reversing the sign after the negative.
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Evaluating the whole numbers and fraction separately.
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⇒ 
Taking LCD for 2,8,16 which is = 16 as its the least common multiple.
Making the denominators common.
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⇒ 
Combining the numerators.
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Making whole number to fraction to evaluate.
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Taking LCD = 16
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⇒ 
Combining the numerators.
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Converting to mixed number.
⇒
pounds (Answer)
Weight of the bag of grapefruit =
pounds