13. At the grocery store Ryan bought a loaf of bread and some apples. The loaf of bread cost $3.95 and the apples cost $1.29 per pound. If Ryan spent $10.40 for the loaf of bread and apples, how many pounds of apples did he buy? Set up the problem and solve it.
1.29x + 3.95= 10.40, Ryan bought 5 pounds of apples
10.40 - 1.29= 3.95x, Ryan bought 6.45 pounds of apples
3.95 - 1.29x= 10.40, Ryan bought 5.16 pounds of apples
3.95 + 1.29x=10.40, Ryan bought 4 pounds of apples
The correct answer is 5.16 pounds of apples
To solve this problem, we need to set up an equation based on the given information and then solve for the unknown variable, which in this case is the number of pounds of apples that Ryan bought.
Let's represent the number of pounds of apples that Ryan bought as "x".
We know that the cost of the apples is $1.29 per pound, so the cost of the apples can be calculated as 1.29x.
We also know that the cost of the loaf of bread is $3.95.
The total amount that Ryan spent on the loaf of bread and apples is $10.40.
So, the equation can be set up as: 1.29x + 3.95 = 10.40.
Now, we can solve this equation to find the value of x.
Subtracting 3.95 from both sides of the equation, we get: 1.29x = 10.40 - 3.95.
Simplifying the right side of the equation, we have: 1.29x = 6.45.
Now, we can divide both sides of the equation by 1.29 to solve for x: x = 6.45 / 1.29.
Evaluating the right side of the equation, we find: x ≈ 5.
So, Ryan bought approximately 5 pounds of apples.
To find the number of pounds of apples Ryan bought, we can set up the equation:
Cost of bread + Cost of apples = Total cost
$3.95 + $1.29(x pounds) = $10.40
Now we can solve for x, the number of pounds of apples Ryan bought:
$1.29x = $10.40 - $3.95
$1.29x = $6.45
Dividing both sides by $1.29:
x = $6.45 / $1.29
x ≈ 5
Therefore, Ryan bought approximately 5 pounds of apples.