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# Maths maths maths maths maths?

Mark is paid a graduated commission. He is paid 5% of the first $4000 pf sales, 6% of the next $6000 and 10% on any further sales. Last month his total sales amounted to $13520. What's his gross income for the month?

Update:

Is it $912?

### 2 Answers

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- 1 decade agoFavorite Answer
so further sales = 13520 - (4000+6000)

=3520

So income = (0.05)(4000)+(0.06)(6000)+(0.1)(3520)

=200+360+352

=912

you were correct

mustafa, is not right as he made 3520, 3250 easy mistake to make on a computer!

- 1 decade ago
5% of the $4000 is = $200

6% of the $6000 is = $360

Now he earned $13520, so you have to remove the first $4000 and the second $6000.

He now remains with $3250

so, 10% os $3250 = $325

Mark's total income is the addition of all = $885

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