Answer:
B, C, and D
Step-by-step explanation:
They have an either a less than sign ( < ) or a greater than sign ( > ).
Step-by-step explanation:
the question is not correct
edit it and I will answer u in comments
Answer
Find out the what fraction of the sandcastle did they build together .
To prove
Let us assume that the fraction of the sandcastle they build together be x .
As given


Than the equation becomes

L.C .M of (3,7) = 21
solving


Therefore the fraction of the sandcastle did they build together be

Hence proved
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Answer:
A. 20ft
Step-by-step explanation: