Martina needs to memorize words on a vocabulary list for German class. She has memorized 20 of the words, which is four-fifths of the list. How many words are on the list?

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asked Feb 22, 2021 107k views

1 vote

Martina needs to memorize words on a vocabulary list for German class. She has memorized 20 of the words, which is four-fifths of the list. How many words are on the list?

Mathematics
middle-school

Tina Nyaa asked

by Tina Nyaa

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2 Answers

7 votes

Answer:

25 words

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

Jenananthan answered Feb 23, 2021

by Jenananthan

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2 votes

Four fifths of 25 is 20 so the answer is 25

Arun Salaria answered Feb 28, 2021

by Arun Salaria

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