Vowels are worth 50$ each and consonants are worth $40. Can you make a word worth $200

No.

It would have to be either 4 vowels or 5 consonants, but there are no words that I know of that fit either description.

No.

Step-by-step explanation:

No, there are four counterexamples which proves the veracity of this affirmation given that words are combinations between consonants and vowels:

1) Three vowels and one consonant: $ 150 + $ 40 = $ 190

2) Three vowels and two consonants: $ 150 + $ 80 = $ 230

3) Four consonants and one vowel: $ 160 + $ 50 = $ 210

4) Three consonants and two vowels: $ 120 + $ 100 = $ 220