Question
At the school store, 5 pens sell for $1.25. Which proportion will help find the cost of 12 pens?
Answers
Ms. Sue
What are your choices?
What do you think the answer is?
What do you think the answer is?
allen
a. 5/12=1.25/x
b. 5/12=x/1.25
c. 5/x=12/1.25
d. x/5=12/1.25
b. 5/12=x/1.25
c. 5/x=12/1.25
d. x/5=12/1.25
allen
I say its c
Damon
5 pens / 12 pens = 1.25 dollars/x dollars
It helps to write the units, pens and dollars.
so
I claim a is correct
although I myself would have written the same thing as
5 pens/1.25 dollars = 12 pens/x dollars
which comes out the same
It helps to write the units, pens and dollars.
so
I claim a is correct
although I myself would have written the same thing as
5 pens/1.25 dollars = 12 pens/x dollars
which comes out the same
Anonymous
5 pens cost 1.25$
1.25/5=0.25$ Price of one pen
12*0.25=3$ Price of 12 pens
1.25/5=0.25$ Price of one pen
12*0.25=3$ Price of 12 pens