<p>The young fish were very tiny, yet each of them ate many times its own weight in solid food every day. </p>
<p>Answer is "No Error". But how is "in" explained grammatically? Is there anything like "eat in solid food" exiting??? I don't think so...</p>
<p>So, help please, TKS!</p>
<p>Most of my students think this question is wrong and want to change “its” to “their” since they want to match this pronoun to the plural “the young fish” However, “its” is actually referring to “each” and it works because “each” and “its” are singular. In doesn’t have anything to do with the error ( or lack or error)</p>
<p>thanks a lot, but i didn’t have the prob with “its”, i know it refers to “each”. what i couldn’t understand here is the usage of “in”, so could you explain that? thanks!</p>
<p>Nobody could answer my question?</p>
<p>it’s just an idiom. …like “your weight in gold.” Here is the actual BB explanation:</p>
<p>There is no error at (D). The noun “weight” combines with the preposition “in” to produce an appropriate idiom.</p>
<p>“in solid food every day” is not modifying anything, it is part of “its own weight” it is a preposition within a adverb clause. I think. I don’t know the term for the “its own weight”, but I know that the “in” is within that clause, not excluded from it. At least that is how I learned it in latin.</p>
<p>thank you for explaining that.</p>