Jorge records hours each day on a time sheet. Last week when he was ill, his time sheet was incomplete. If Jorge worked a total of 30.5 hours last week, how many hours are missing?

6.75 hours.

Step-by-step explanation:

Please consider the table of hours worked.

We have been given that Jorge records hours each day on a time sheet. Last week when he was ill, his time sheet was incomplete. Jorge worked a total of 30.5 hours last week.

To find the number of missing hours, we will subtract the sum of hours in table from 30.5 hours as:

Therefore, 6.75 hours are missing from the table.

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step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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