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A baker bought 2 4/5 kg of butter he used 1 2/4 kg for the cookies. How many kg of butter were not used? A.1 2/20 B.3 6/9 2/3 C. 1 2/10 D. 1 3/10 ​

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Answer:

D. 1 3/10

Step-by-step explanation:

step 1: Find the LCD then simplify,just copy the whole numbers.

4=4,8,12,16,20

5=5,10,15,20

2 4/5 = 2 16/20

1 2/4 = 1 10/20

step 2: subtract

2 16/20

-

1 10/20

=1 6/20

or reduce to lowest term

=1 3/10

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