During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked 2115 hours. Complete the working equation that represents the number of hours, h , Richard needs to work to reach 30 hours for the week and solve the equation.(1 point)

Question

An illustration showing a male library assistant, Richard, with a Caucasian descent in a quiet, academic-style university library. He's putting books back on shelves. A visible clock shows the weekday and the time passage. A prominent calendar indicates the first three days of the week. Richard's work schedule is depicted visually — showing a tally of hours worked each day, totaling to 2115 hours. A blank space remains in the tally, symbolizing the remaining hours he needs to work to reach his 30-hour target for the week. Remember, all elements of the equation are to be visualized, but no text should appear in the image.

During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked 2115 hours. Complete the working equation that represents the number of hours, h , Richard needs to work to reach 30 hours for the week and solve the equation.(1 point)

Answer 1

To find the number of hours Richard needs to work to reach 30 hours for the week, we can use the equation:

h = total hours - hours already worked

Given that Richard needs to work a total of 30 hours for the week and he has already worked 21.15 hours, we can substitute these values into the equation:

h = 30 - 21.15

Now we can solve the equation to find the value of h:

h = 8.85

Therefore, Richard needs to work an additional 8.85 hours to reach 30 hours for the week.

Answer 2

To find out how many more hours Richard needs to work to reach a total of 30 hours for the week, we can set up an equation.

Let h represent the number of hours Richard needs to work to reach 30 hours.

We know that for the first three days, Richard worked 2115 hours.

So, the equation would be:

2115 hours + h hours = 30 hours

To solve for h, we can subtract 2115 from both sides of the equation:

h hours = 30 hours - 2115 hours

Simplifying, we have:

h hours = -2085 hours

Since we cannot have a negative number of hours, it means that Richard has already worked more than the required 30 hours for the week. Therefore, Richard does not need to work any additional hours to reach 30 hours.

Answer 3

To find the number of hours Richard still needs to work to reach 30 hours for the week, we can subtract the hours he has already worked from the target number of hours.

The working equation is:

30 hours - 21.15 hours = h

To solve the equation, we subtract 21.15 from 30 hours:

30 hours - 21.15 hours = 8.85 hours

Therefore, Richard still needs to work 8.85 hours to reach 30 hours for the week.