K = Kates age
L = Lannys age
M = Marias age
N = Normans age
K = L + 5
L = M - 2
M = 2 N
N = 10
M = 2 N
M = 2 * 10 = 20
L = M - 2 = 20 - 2 = 18
K = L + 5 = 18 + 5 = 23
Kate is 5 years older than Lenny. Lenny is 2 years younger than Maria. Maria is twice as old as Norman. If Norman is 10 years old, how old is katie?
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