When the question has too many words
Question
A shop sold 3/5 of its notebooks in the morning and 1/4 of the remaining notebooks in the afternoon. If 90 notebooks were left, how many notebooks were there at first?
Ruiya's start
This is a fraction-of-remainder question. First, after selling 3/5 in the morning, what fraction was left? 1 - 3/5 = ___
