20 hours a week is how many hours a day

Asked by admin @ 29/10/2021 in Mathematics viewed by 437 People

1. Approximately how many hours a day are spent sleeping?

A. 6 hours
B. 9 hours
C. 8 hours
D. 10 hours
2. According to this graph, for every 24 hours, about how many hours are spent socializing and watching TV?
A. 4 hours
B. 2 hours
C. 5 hours
D. 6 hours
3. If a student ate 3/4 (three-fourths) of their meals away from home, what % of the total day is spent eating other than at home?
A. 6%
B. 4%
C. 7%
D. 12%
4. Approximately how many hours a day are spent in school and doing homework?
A. 7 hours
B. 8.5 hours
C. 9 hours
D. 8 hours
5. Which equation shows how to figure the amount of time a student spends watching TV during a week? A equals the total amount of time watching TV for a week.
A. A = 13% X 24 X 7
B. A - 24 X 13 X 7
C. A = 1.3 X 7 X 24
D. A = 24 DIVIDED BY 13% X 7
6. Approximately how much time is spent in a week on socializing?
A. 20 hours
B. 21 hours
C. 22 hours
D. 23 hours

Answered by admin @ 29/10/2021

1. there are 24 hrs in a day and it states that 33% or 33/100 are spent sleeping so set the fraction 33/100 equal to x/24 to find how many hours are equal to 33%
cross multiply: 792 = 100x
simplify: 7.92 = x

For 2, 4, and 6 use the same process (except for 4 add the hours for school and hw together)

3. Because 3/4 are eaten at home, you should find 3/4 of your total eating time, just multiply 3/4 by .08 to get .06

5. You watch TV 13% of your day (24 hours), so .13 * 24, but this is over a week so this must be multiplied for every day it is repeated, so A = .13 * 24 * 7

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