Answer:
14 weeks till he has $480
Step-by-step explanation:
He needs $480
He has $60
He has to earn the rest over the span of the next few weeks, which is $30 for an unknown number of weeks.
Let the unknown number be x in our equation
What he needs to buy the TV and Stereo system is $480 which is our total
The $60 dollars he received is a complete variable
hence we can say, 30x+60=480
This is our equation but it isn't simplified.
first, divide everything by 10(it is a common divisor)
3x+6=48
subtract 6 which is complete from the total
3x=42
Make x the subject and divide both sides by 3
x=14
so the unknown number of weeks is 14.
