Answer:
The answer to your question is: 3 weeks and 3/5 almost 4 weeks
Explanation:
Need to learn 30 words
Already know 12 words
learn 5 words each week
# of weeks to be ready for the test
# of words need to learn = 30 - 12 = 18
Learn 5 words per week = 18 / 5
= 3 weeks and 3/5 almost 4 weeks