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777dan777 [17]
3 years ago
12

Mrs. Henderson has 60 pens and pencils in her desk. She knows that she has twice as many pencils as pens. She writes the express

ion 2x + x for the total number of pens and pencils, where x is the number of pens. Which number in the set {15, 20, 25, 30} makes this expression equal to 60?
Mathematics
1 answer:
AlexFokin [52]3 years ago
7 0
2x + x = 60
3x = 60
x = 60/3
x = 20 <===
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