240 and can i get brainlist?
and hope this help you(-;
Answer: 
Step-by-step explanation:
Geometric mean= Number of terms root of the product of all the terms of that sequence
sqrt(2sqrt(5)*5sqrt(2))= 10sqrt(10)
23% as a fraction would be 23/100
3x+40=100
subtract 40 from both sides
3x= 60
divide by 3
x=20
each Sweater cost 20