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3 pens cost $15. What will 30 pens cost?

3 pens cost $15. What will 30 pens cost?
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3 pens cost $15. What will 30 pens cost?

User Panos Bechlivanos
by
7.7k points

2 Answers

4 votes
If 3 pens cost $15, then we can assume that one pen is $5. If we have 30 pens, multiply $5 by 30 to get a total of $150.
User Psyho
by
8.5k points
6 votes
Answer=$150

3 30
___=_____
15 x

cross multiply
3x=450
divide both sides by 3
x=$150
User AngelicCore
by
8.8k points
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