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Carly tutors students in math on the weekends and offers both thirty-minute sessions and sixty-minute sessions. She earns $15 for each
thirty-minute session and $25 for each sixty-minute session.
If she earned $230 this past weekend and had x thirty-minute sessions and x - 2 sixty-minute sessions, what is the value of x?

A 7
B. 5
C. 8
D. 6

Sagot :

The value of x is 7. The correct option is A. 7

Solving Linear equations

From the question, we are to determine the value of x

From the given information,

Carly earns $15 for each thirty-minute session and $25 for each sixty-minute session

Also,

She earned $230 this past weekend and had x thirty-minute sessions and x - 2 sixty-minute sessions

Then, we can write that

x × $15 + (x -2) × $25 = $230

Solve for x in the equation

15x + 25(x -2) = 230

15x + 25x - 50 = 230

40x - 50 = 230

40x = 230 + 50

40x = 280

x = 280/40

x = 7

Hence, the value of x is 7. The correct option is A. 7

Learn more on Solving liner equations here: https://brainly.com/question/15464164

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