Answer:
140 cards
Step-by-step explanation:
-Let x be the total number of trading cards Lee has.
-Therefore, each person has:
[tex]Lee= x\\\\Kenny=1\frac{5}{7}x[/tex]
#Kenny collects 50% more. We multiply his current amount by 1.5times:
[tex]=1\frac{5}{7}\times 1.5\\\\=2\frac{4}{7}x[/tex]
#We are given that Kenny's new number is 220 more than Lee's x. We therefore equate and solve as below:
[tex]2\frac{4}{7}x-x=220\\\\1\frac{4}{7}x=220\\\\=140[/tex]
Hence, Lee had 140 cards
