Percent decrease. 41%
percent change= (new-old)/old *100
= -41 % the negative means decreasing
If 30% were perfect, 70% were not perfect. So we know that 70% of the total number of photographs is 210.
p(70/100)=210 multiply both sides by 100
70p=21000 divide both sides by 70
p=300
So there are 300 photographs in all.
<h2>Steps</h2>
So firstly, we need to find how much the entire trip will cost. To do this, add the product of 16 and 35 (since tickets are 35 per student, and there are 16 students) with 960:
<u>The total cost of the trip is $1520.</u> Next, we know that the sweatshirts will be making a profit of $19 per article sold so divide 1520 by 19:
<u>The students need to sell 80 sweatshirts total to get enough money for the trip.</u> Now, to know how many sweatshirts each student needs to sell individually, divide 80 by 16 (since there are 16 students):
<h2>Answer</h2>
<u>In short, each student must sell 5 sweatshirts to pay for the entire trip.</u>
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Linear that is it ugh i needed to make it 20 characters ok