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24 votes
24 votes
A lizard can lose its tail to escape a predator, and the tail will grow back at a constant rate. After 6 weeks, a lizard's tail has regrown to 3 3/4 inches long. Find the number of inches the tail grew each week.

User Gilad Bar
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2.6k points

2 Answers

13 votes
13 votes

Answer:

15/24 or 5/8 inches each week

Explanation and Checking part below :)

Explanation:

3 3/4 ÷ 6

1. Turn the mixed number into an improper fraction.

15/4 ÷ 6/1

2. Use the KCF (keep,change,flip) method (multiply the reciprocal).

15/4 × 1/6 = 15/24

3. Simplify if needed to.

15/24 ----> simplified is 5/8

Check:

5/8 × 6 = 30/8

30/8 = 3 6/8 -----> Simplified to 3 3/4

User Eric Sauer
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3.1k points
21 votes
21 votes
You need to divide 3 3/4 into 6 which equals to 5/8 or 0.625
Explanation
3 3/4= (4* 3)+3= 15 and you add 4 on the bottom= 15/4 then divide into 6= 6/1 so we use kcf 15/4 * 1/6= 15/24 then simplify 15/25 divide into 3/3 equal 5/8
User Sadikhasan
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2.9k points