Jamie spenta total of $11.60 on 5dentical pens and a ruler .A rulercost$1.30less than a pen .how much did a pen cost?
5*Pen+ruller=11.60
ruler=Pen-1.30
5Pen+Pen-1.30=11.60
Pen=12.90/6=2.15
Please gelp me
I don't understand it is not clear for me
Well, if we let "x" represent the cost of a pen, then the ruler would cost "x - $1.30". Since Jamie bought 5 identical pens and a ruler, we can set up the equation 5x + (x - $1.30) = $11.60. Solving this equation, we find that a pen costs $1.60. So, a pen costs $1.60 - but remember, laughter is priceless!
To solve this problem, let's assign variables to the unknown quantities. Let's say the cost of a pen is "x" dollars. According to the given information, the ruler costs $1.30 less than a pen. So, the cost of the ruler would be (x - $1.30).
Now, let's use the given information to form an equation. Jamie bought 5 identical pens and a ruler, so the total cost is $11.60. We can write this equation as:
5x + (x - $1.30) = $11.60
Now, we can simplify and solve the equation to find the value of x, which is the cost of a pen:
6x - $1.30 = $11.60
Adding $1.30 to both sides:
6x = $11.60 + $1.30
6x = $12.90
Dividing both sides by 6:
x = $12.90 / 6
x ≈ $2.15
Therefore, a pen costs approximately $2.15.