Answer:
The weight of bag of grapefruit =
pounds
Step-by-step explanation:
The total weight of apples purchased = 1 5/8 pounds
Now, 
So, the weight of apples brought = 1.625 pounds.
The total weight of bananas purchased = 2 3/16 pounds
Now, 
So, the weight of bananas brought = 2.1875 pounds.
Let us assume the total weight of grapefruit weight = m pounds
Now, total weight = 7 1/12 pounds = 7.0833
⇒ Weight of ( Apples + Banana + Grapefruit) = Total Weight
⇒1.625 pounds + 2.1875 pounds + m = 7.0833 pounds
or, m = 7.0833 - 3.8125 = 3 .27
or, m = 3.27
Now, 
Hence. the weight of bag of grapefruit =