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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?

 Apr 22, 2021
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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. 

 Apr 23, 2021

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