Frank needs to make $800 to buy an iphone 12. How many 8 hour shifts should Frank work at $30 an hour to purchase the iPhone 12?

Question

I need to write this as an equation and solve. I am not sure how to write it out.

Answer 1

Hello, Misty,

Let's define 'X' as the number of shifts Frank needs to work to save the $800 to buy an iPhone12.

We know that each shift is 8 hours and he makes $30/hr. Therefore, each shift earns Frank (8*$30=) $240/shift.

When we multiply the number of shifts, X, Frank works times $240, we find the total he he has earned for those X shifts:

($240/shift)*X = total earned.

We are asked how many shifts it takes to earn $800, so put that number into the equation:

($240/shift)X = $800

X = 3.333 . . . shifts

I hope this helps,

Bob

Answer 2

Frank needs $800 and makes $30 every hour. So, 800/30 = 26.67 hours he needs to work, but the question asks how many 8 hour shifts. so (800/30)/8 = 3.33.

So, it will take Frank 3.33 8-hour shifts making $30 per hour in order to make $800.

Depending on your instructions, you may need to round up to 4 if frank cannot do only part of a shift.

answer: 3.33

rounded: 4