Ok, so we know it costs $1.10 to make a pin, so the cost of making all 1000 pins must have been:

We know that 35% of the pins, hence 350 pins, were given to charity (we assume this means donated for free), and so the company sold 650 pins.
60% of these we sold at $3 each;

So 390 pins sold at $3 each comes to

So the company has already made $1170.
The other 40% of the 650 remaining pins (260 pins) were sold at $5 for 2. We assume from the question that they were only sold in pairs and were all sold, so we can essentially figure out that 130 pairs were sold at $5 each;

So the company has sold the pins for $650 + $1170 = $1820
This means that the company has made
$1820 - $1100 = $720 as profit
So the percentage profit earned (profit/cost times 100%) would be

Which to one decimal place is 65.5% profit.
Hope this helped.
Answer:
19/50
Step-by-step explanation:
19 males and 50 people are in total
Answer:
$4000, $5600 and $7200
Step-by-step explanation:
Let the money be 5x,7x and 9x.
Total collection of money is $16,800
ATQ,
5x+7x+9x=$16,800
21x=$16,800

So, the values are :
5x=5(800) = $4000
7x=7(800) = $5600
9x=9(800) = $7200