4/5 of Ahmed's money was 2/7 of Brad's money. When Brad spent $20 on a book, he would still have $16 more than Ahmed. How much did Ahmed have at first?
+526 Let's assume Ahmed had \(x\) at a first.
∴ Brad had = \({14x \over 5}\)
Now, according to question
\({14x \over 5}-20=x+16\)
\({14x \over 5}-x=16+20\)
\(9x=180\)
\(x=20\)
∴ Ahmed had 20 at first.
