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How do you answer Ray bought 15 pencils for 7.75 Some cost 45 each the rest 65 each How many of each did Ray buy. Answer step by step please?
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
What else can I help you with?
David bought 15 gallons of gasoline his total cost was 13.60 how much was the gasoline per gallon?
david bought 15 gallons of gasoline. his total cost was $13.60. how much was the gasoline per gallon?
She bought 3 oranges and 6 apples She paid 4.50 Maria went to the same store and bought 2 oranges and 2 apples Her cost was 2.10 How much would one apple cost?
apple = 0.45 each orange = 0.60 each
Carol bought 8 identical boxes for a total of 3.60 How much did each box cost?
0.45
If you bought 9 pounds of dog food at 57 cents per pound how much did it cost?
Justin is cooking dinner this week for his grandparents. He bought 1.5 pounds of green beans and 0.5 pounds of mushrooms to make a casserole. Green beans cost $2.20 per pound, and mushrooms cost $3.50 per pound. How much money did Justin spend in all?
A group of employees bought a get-well gift for a coworker the gift cost 16.06 If there are 22 employees in the group how much does each employee need to contribute?
The correct answer is $0.73
If 4 pencils cost 10 cents how many pencils can be bought for 50 cents?
4 pencils cost 10 cents so pencils are 10/4 cents each.So 50 cents will buy 50*4/10 = 20 pencils
How many pencils costing 25c each can be bought with 4.00?
To find out how many pencils can be bought with $4.00 when each pencil costs $0.25, divide the total amount of money by the cost of one pencil. This is calculated as follows: $4.00 ÷ $0.25 = 16. Therefore, you can buy 16 pencils with $4.00.
What is the cost of p pencils if pencils cost 20 each and pens cost 30 each?
The cost of p pencils is 20p.
How many 21 cent pencils can be bought with 7 dollars?
To determine how many 21-cent pencils can be bought with 7 dollars, you first need to find out how many cents are in 7 dollars. Since there are 100 cents in a dollar, 7 dollars is equal to 700 cents. To find out how many pencils can be bought, divide the total amount of cents (700) by the cost of each pencil (21 cents). This calculation results in approximately 33 pencils that can be bought with 7 dollars.
Max bought 10 pencils for 24 cents each .the tax was 14 cents .what was the total cost of the pencils?
10 x .24 +.14=2.54 so he spent $2.54
Johnny bought a pack of 15 pencils for 3.75 how much will one pencil cost?
0.25 which equals 25 cents
How much will four pencils cost if six pencils cost 1.68?
$1.12
If pencils cost 0.26 each could you buy four pencils with 1.00?
If pencils cost 0.26 each could you buy four pencils with 1.00?
Pencils cost 5p each How much would 14 pencils cost?
Costs 70p
You bought 6 pencils They cost 60p altogether How much did one pencil cost?
To find the cost of one pencil, you can divide the total cost by the number of pencils. In this case, you paid 60p for 6 pencils. So, to find the cost of one pencil, you would divide 60p by 6, which equals 10p per pencil. Therefore, each pencil costs 10p.
Frankie bougt two mechanical pencils Each pencil cost 3.87 What was the total the cost for the two pencils?
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
How much would it cost for a dozen pencils in 1997?
The cost of a dozen pencils in 1997 would vary depending on the brand and quality of the pencils. On average, a dozen standard pencils in 1997 may have cost around $2 to $5.
