Jerry needs to buy a used car, but only has $630.00. He wants to purchase a yellow sports car with 61,000 miles. The owner is asking $1,920.00. If he earns $120.00 per week at the Coffee Shack, which equation represents the number of weeks he is going to have to work until he can purchase the car?
A.
120x = 1,920
B.
120x + 630 = 1,920
C.
120x + 630 + 1,920 = 61,000(My answer)
D.
1,920 + 630 = 120x
No! The number of miles has nothing to do with this calculation.
n = (1920 - 630) / 120
is
120 n = 1920 - 630
which is
120 n + 630 = 1920
the mileage is spurious information
... intended to mislead
Jerry is going to work for x weeks at 120 per week ... then add that money to the $630 he already has to make up the selling price
The correct equation that represents the number of weeks Jerry is going to have to work until he can purchase the car is:
B. 120x + 630 = 1,920
To find the number of weeks Jerry needs to work in order to purchase the car, you need to calculate how many weeks it will take for Jerry to save up enough money to reach the price of the car ($1,920).
Given that Jerry earns $120 per week, you can set up an equation to represent this situation. Let's call the number of weeks he needs to work "x".
The equation representing the situation is:
120x = 1,920
This equation says that the total amount of money Jerry will earn in x weeks (120x) is equal to the price of the car ($1,920).
So, the correct answer is A. 120x = 1,920.