Archive: Julia knows 19 Latin words. Each day, she learns 6 new words. How many days until she knows 145 words?
A. 20
B. 21
C. 22
D. 23
B. 21
Yes. It's 21
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To find out how many days it will take for Julia to know 145 words, we can set up an equation.
Let's assume it will take "x" days for Julia to reach 145 words. We know that Julia starts with 19 words and learns 6 new words each day.
So after "x" days, Julia will know 19 + 6x words.
We can now set up the equation:
19 + 6x = 145
To solve for "x," we need to isolate it on one side of the equation.
19 + 6x - 19 = 145 - 19
6x = 126
Now, divide both sides of the equation by 6 to solve for "x":
6x / 6 = 126 / 6
x = 21
Therefore, it will take Julia 21 days to know 145 words.
The correct answer is B. 21.