Suppose you have $30 and earn $8 per hour how many hours must you work until you have $358

Let the number of hours be x.

At $8 per hour, by working x hours, you'll earn 8x.

You already have $30, so by working x hours, you will have

8x + 30

You want 8x + 30 to equal $358.

8x + 30 = 358

8x = 328

x = 41

Answer: You must work 41 hours.

Amount you already have = $30

Amount you need to earn = $358 - $30 = $328

One hour = $8

Number of hours needed = 328 : 8 = 41

Answer: You need to work for 41 hours.