Hussein

Hussein owns 450000 crowns (local currency). He spent at the bookstore 2 over 9 to buy some books and tales. He paid 3 over 5 of his money to buy his math book.
a. Calculate the remaining amount of money with Hussein?
b. Hussein lost 3 over 4 of the remaining money. Calculate the amount of money lost.

Correct answer:

a =  80000
b =  60000

Step-by-step explanation:

$$\begin{gathered} x=450000 \\ a=x-{\displaystyle \frac{2}{9}}\cdot x-{\displaystyle \frac{3}{5}}\cdot x=450000-{\displaystyle \frac{2}{9}}\cdot 450000-{\displaystyle \frac{3}{5}}\cdot 450000=80000 \end{gathered}$$

$b={\displaystyle \frac{3}{4}}\cdot a={\displaystyle \frac{3}{4}}\cdot 80000=60000$

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