Money with Nathan in his savings account = $40
Rate of interest per annum = 5%
We know that :
In this case :
Principal = $40
Rate = 5%
Time = 1 year
Simple interest he will earn in 1 year :
Amount = Principal + Interest
Amount Nathan has to pay at the end of one year :
Thus, at the end of 1 year Nathan has to pay $42.
Therefore, simple interest Nathan will earn in 1 year = $2
Answer:
There is no specific instruction in your question. I try to answer it based on what I understand from the equations. Hope this helps!
Step-by-step explanation:
Just rearrange the equation to solve the variable.
Question is incomplete. Here is the complete question.
A city employee paints curbs iin parking lots and replaces road signs. It takes 0.5 hour to paint a parking lot curb and 2.5 hours to replace a road sign. The function below can be used to find c, the number of parking lot curbs the employee paints when he replaces r road signs in a 40-hour workweek.
If the employee painted 20 curbs in one week, how many road signs did he replace that week?
a) 20 b) 30 c) 0 d) 12
Answer: d) 12
Step-by-step explanation: In one week, the employee painted 20 curbs.
c is the number of curbs painted in one week, so: c = 20
r = 12
In one week, the employee replaced 12 road signs.