Answer: The total profit earned last year by all 3 divisons is $1500000.
Step-by-step explanation:
Since we have given that
there are 3 divisions,
Each divisions earned a profit is given by
[tex]\$ 5\times 10^5[/tex]
So, 3 divisions altogether earn a profit is given by
[tex]3\times 5\times 10^5\\\\=3\times 5\times 100000\\\\=\$1500000[/tex]
So, the total profit earned last year by all 3 divisons is $1500000.