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09-12-2016
Mathematics

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A seamstress has 1/4 of a foot of thread. Then she uses 1/5 of a foot of thread to sew a hole. How much of the thread is left?

A) 9/20 of a foot
B) 3/20 of a foot
C) 1/20 of a foot
D) 1/16 of a foot

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Аноним Аноним

09-12-2016

answer is C) 1/20 of a foot

1/4 -1/5
= 5/20 - 4/20
=1/20

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