x= # of pencils that cost .45 y= # of pencils that cost .65 So now you need 2 equations for 2 variables: 15= x+y This equation is saying: 15 total pencils bought= pencils that cost .45 + pencils that cost .65 The second equation is: 7.75= .45x + .65y This equation is saying: total money spent (7.75)= price of pencils (.45) times # of pencils + price of pencils (.65) times # of pencils Then you combine these two equations, but first switch around the first equation to look like: y=15-x Then you replace the "y" in the second equation by putting in what y equals the first equation: 7.75= .45x + .65(15-x) Then distribute and solve for x: x = 10 Then enter 10 into the first equation for x to figure out y: y= 15- 10 y= 5 So your answer is-- Ray bought 10 pencils that cost .45 and 5 pencils that cost .65
david bought 15 gallons of gasoline. his total cost was $13.60. how much was the gasoline per gallon?
apple = 0.45 each orange = 0.60 each
5.13
0.45
The correct answer is $0.73
4 pencils cost 10 cents so pencils are 10/4 cents each.So 50 cents will buy 50*4/10 = 20 pencils
the equation is 60p divided by 6 (pencils) = You do the math.
The cost of p pencils is 20p.
10 x .24 +.14=2.54 so he spent $2.54
0.25 which equals 25 cents
$1.12
If pencils cost 0.26 each could you buy four pencils with 1.00?
Costs 70p
This question is for some a bit difficoult because there are so many words.We can simplify it by figuring out what is important in the question.Each pencil cost 3.87.Cost of two pencils?And it is easier to get the grasp of the question.3.87*2=7.74
Eighteen pencils !
I'll represent the cost of a pencil by the variable p.12p=1.44p=1.44/12p=0.12So 4 pencils would cost:4p=0.12*44p=0.48
Markers are .50cents each Pencils are .15 cents each