B. To prepare for an exam, Gina studied her lessons for 3 days She studied 1.5 hours more on Friday than on Thursday. On Saturday, she studied 0.75 hour less than she did on Friday If she studied 4 hours on Saturday, how many hours in all did she study in three days? 6. What is asked in the problem? 7. What are the given facts? 8. What operation/s to be used? 9. Show your solution. ers of cloth remained 10. What is the complete answer?
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Answer:
6. The problem asks for the total number of hours Gina studied in three days.
7. The given facts are:
- Gina studied her lessons for 3 days.
- She studied 1.5 hours more on Friday than on Thursday.
- On Saturday, she studied 0.75 hour less than she did on Friday.
- She studied 4 hours on Saturday.
8. The operations to be used are addition and subtraction.
9. Solution:
Let's denote the number of hours Gina studied on Thursday as x.
On Friday, she studied 1.5 hours more than Thursday, so she studied x + 1.5 hours.
On Saturday, she studied 0.75 hour less than Friday, so she studied (x + 1.5) - 0.75 = x + 0.75 hours.
Given that she studied 4 hours on Saturday, we can set up the equation:
x + 0.75 = 4
Subtracting 0.75 from both sides:
x = 4 - 0.75
x = 3.25
Therefore, Gina studied 3.25 hours on Thursday, (3.25 + 1.5) = 4.75 hours on Friday, and 4 hours on Saturday.
The total number of hours she studied in three days is 3.25 + 4.75 + 4 = 12 hours.
10. The complete answer is: Gina studied a total of 12 hours in three days.