Answer:
400 cards
Step-by-step explanation: [tex]20\div5[/tex]%
Calculate
[tex]\frac{20}{0.05}[/tex]
Multiply both the numerator and denominator with the same integer
[tex]\frac{2000}{5}[/tex]
Cross out the common factor
[tex]400[/tex]
I hope this helps you
:)