Question 1041995
We want {{{(80x+150)/x > (35x+600)/x }}}.

Since x > 0 ( for average profit {{{x<>0}}}), we can multiply both sides by x without changing the direction of the inequality.

===> 80x+150 > 35x+600  ===> 45x > 450  ===> x > 10.

Since x is measured by the hundreds, Samsung's average profit will be greater than Apple's upon selling 1,001 phones..