shannel25
shannel25
04-12-2015
Mathematics
contestada
3 pens cost $15. What will 30 pens cost?
Respuesta :
gmjohnson2000
gmjohnson2000
04-12-2015
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.
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VenusRetrograde
VenusRetrograde
04-12-2015
Answer=$150
3 30
___=_____
15 x
cross multiply
3x=450
divide both sides by 3
x=$150
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