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Bernie completed 2/5 of her science project in 1/4 of a day. how long did it take her to complete the entire project

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Answer: 15 hours

Explanation:


2/5 & 1/4 have correlation to each other.

Divided both by two so you know how long it takes to complete 1/5 of the project.

(2/5)*0.5 , (1/4)*0.5 ; 1/5 = 1/8

Multiply both fractions by 5 to see how long it will take for the whole project.

(1/5)*5 = (1/8)*5 ; 1 = 5/8

5/8 is the amount of time in a day the whole project took so you multiply this by 24 hours.

(24/8)*5 = 15

15 hours

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