I heard recently that a national journalist used a plural newspaper when referring to a married couple – she used it twice. This is what led me to examine it, because it is contrary to what I learned in public school (1937-1950). I know that language is evolving, but I will continue to use the singular verbage with all collective nouns, and if I usually hear, it will continue to rub the nerves. The Associated Press Stylebook classifs data as plural nouns, usually plural albums and pronouns are supported. An additional note indicates that some words, such as.B. data that are plural, become collective nouns and take singular nouns when the group or quantity is considered a unit. Examples: the data is solid. (One unit.) Data was collected with care. I am a researcher, and I want to know the most common errors in the subject-verb agreement, and I would like to have something of the theoretical framework and conceptual framework of your book. I will use it as a reference.
However, if we remove the word „two” from your sentence, it would be written in formal American English as „fifty percent of mangoes are corrupt.” The subject of your rate is 50%. Fractions and percentages can be either singular or plural depending on the purpose of the next preposition. . . .