A cellphone company charges a monthly rate of $55 for unlimited text and data and $0.50 per minute for phone calls. The bill last month was $66. Write and solve an equation to find out how many minutes for phone calls were charged on this bill.
Let's say the number of minutes for phone calls that were charged on this bill is represented by the variable m.
The cost of the phone calls would be given by 0.50*m.
The total bill would then be the sum of the cost of the phone calls and the monthly rate for unlimited text and data, which is $55:
0.50*m + 55 = 66.
To find the value of m, we can subtract 55 from both sides of the equation:
0.50*m = 66 - 55,
0.50*m = 11.
Finally, we can divide both sides of the equation by 0.50 to solve for m:
m = 11 / 0.50,
m = 22.
Therefore, there were 22 minutes for phone calls charged on this bill.