In how many ways can 5 cards be arranged side-by-side on a table
2 answers:
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According to the information given in the exercise:
• 1 meter of lightning cable weight 85 grams.
,• An empty spool weighs 260 grams.
,• Ted weighs the partly used spool shown in the picture and its total weight is 1540 grams.
Then, knowing this, let be "x" the number of meters of cable left on the spool.
You can set up the following using the information given in the exercise:
Knowing that:
You can set up that:
Therefore, solving for "x", you get:
Hence, you can conclude that the answer is: Second option.