Martina needs to memorize words on a vocabulary list for German class. She has memorized 20 of the words, which is four-fifths o
f the list. How many words are on the list?
2 answers:
Answer:
25 words
Step-by-step explanation:
use a proportion
20/x=⅘
cross multiply
X×4 and 20×5
4x=100
÷4. ÷4
x=25
25 words
check
20/25=4/5
Four fifths of 25 is 20 so the answer is 25
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