Height of the stack = 3 fourth of an inch
= [tex]\frac{3}{4}[/tex] × (1 inch)
Height of 180 cards = [tex]\frac{3}{4}[/tex] × (1 inch)
Thickness of 1 card = [tex]\frac{3}{4}[/tex] × [tex]\frac{1}{180}[/tex] × (1 inch)
= [tex]\frac{1}{240}[/tex] × (1 inch)
