Question

2. Rich wrote a novel that sells for n dollars each. He received a bonus of $50,000 to sign the

Answer 1

The equation which represent total amount of income he earns from selling book is,  $A=50000+\frac{109}{100}bn$

Since, Selling price of one novel is n dollars

So, selling price of b books is,  $n*b=nb$

Since, he receives 9% commission on each book sale.

So, total commission he receives on selling of b books is,

                                      $nb*\frac{9}{100}=\frac{9}{100}nb$

And  also he received a bonus of $50,000 to sign the  contract to write the book,

So, total amount of income he earns is represented by A,

                  $A=50000+bn+\frac{9}{100}bn\\\\A=50000+\frac{109}{100}bn$

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