The students ordered 13 sweatshirts at a total price of 236.60. The next day, however, they ordered more sweatshirts. The final invoice was issued for €327.60. How many sweatshirts did the students order?

Correct answer:

x =  5

Step-by-step explanation:

n1=13 c1=236.60 EUR  c=c1/n1=236.6/13=591=1851=18.2 EUR  c2=327.60 EUR  c2 = c1 + x c  x=cc2c1=18.2327.6236.6=5

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