Class A folds 160 fewer paper cranes than class B and 2/3 as many paper cranes as class C. Class B folds 92 more paper cranes than class C. How many paper cranes does class B fold?

Let x = Class A

Let y = Class B

Let z = Class C

Equations from problem:

x - 160 = y

2/3x = z

y + 92 = z

Solving through substitution:

2/3x = y + 92

2/3x = (x - 160) + 92

2/3x = x - 68

-1/3x = - 68

3 (-1/3x) = 3 (-68)

-x = - 204

x = 204

Now substitute x in the first equation to get y:

204 - 160 = y

44 = y

44 = Class B

There are 44 folded paper cranes in Class B.