A few days ago
help please??
if pens cost 30 cent
then how woul du solve the equation like this:
r pens..meaning how many pens r there
Top 2 Answers
A few days ago
Favorite Answer
30xr
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A few days ago
There is something missing. Can you supply the question exactly as written?
If ‘r’ is the number of pens, then the total cost is 0.30r (30 cents x r). If you have the final cost and the unit price, then you can figure out how many pens there are.
For example:
Suppose that the total price is $4.50. If pens cost 30 cents ($0.30), then how many pens are there?
Answer:
Let r be the number of pens
0.30r = 4.50
r=4.50/0.30
r=15
There are 15 pens.
0
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