I think the answer is the second one
60 because 5 sandwich rings cut into 4 pieces is 20 then cutting each of the twenty pieces three times would add up to 60 pieces
Answer:
0.10
Step-by-step explanation:
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12/x + 7 =13/x, where x is not 0;
<=> 12 + 7x = 13 <=> 7x = 1 <=> x = 1/7;