Later, the teaching assistant in caroline’s chemistry course gives her some advice. “based on past experience,” the teaching assistant says, “working on 15 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour.” for simplicity, assume students always cover the same number of pages during each hour they spend reading. given this information, in order to use her 4 hours of study time to get the best exam score possible, how many hours should she have spent working on problems, and how many should she have spent reading?
1 hour working on problems, 3 hours reading
2 hours working on problems, 2 hours reading
3 hours working on problems, 1 hour reading
4 hours working on problems, 0 hours reading

1 hour working on problems and 3 hours reading

Explanation:

Let's find the solution. From the following statement:

“working on 15 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour.” we can develop the following expression:

For raising the score: 15 problems = 1 hour reading

Because we do not know how much time each problem takes, She should have spent 1 hour working on problems and 3 hours reading (maximum).

For giving an example, let's consider you spent 20 minutes on each problem, then in 1 hour you would have resolved only 3 problems. That is way, she must spend the maximum of hours reading.  

the most important factor in the

work process or industry is to retain the interest of the employee. and to

retain them, their salary or profit must be adjusted to the best value. unless

the employee does not do his job properly, employees must receive bonuses or

benefits to ensure them to stay in the company. it will actually make them stay

longer, make them feel important and reduce costs for hiring new employees.

explanation:

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d. low interest rates