Question 1038481
If I am reading your question correctly...
We can determine that the missing banana peel weighs 7/8 of an ounce. And that the bananas themselves, without peels, are equal in weight. 
We have been told that the banana peel weighs 1/8 of the total weight of the banana. So we can surmise that 7/8 of an ounce is 1/8 of the weight of the banana. 
Which means that we require 8 parts, weighing 7/8 of an ounce a piece, to reach the full weight of the banana, in ounces. So...
{{{(7/8)*(8/1)=56/8=7}}}
The full weight is 7 ounces. 
Check your answer! 
{{{(7/1)*(1/8)=7/8}}}
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