SOLUTION: A person starts his job with a certain monthly salary and earns a fixed increment every year. If his salary was Rs 4500 after 4 years of service and Rs 5400 after 10 years of servi
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Question 776305: A person starts his job with a certain monthly salary and earns a fixed increment every year. If his salary was Rs 4500 after 4 years of service and Rs 5400 after 10 years of service, find his initial salary and the annual increment. I can't figure out if I have to take into account the 12 months in a year into the equation. Thankyou in advance. Appreciate the time and effort.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
No, you don't need to take the "12 months per year" into account. You have two data points: (4, 4500) and (10, 5400). Since the problem implies a fixed annual increase, the function must be linear.
Use the two-point form of an equation of a line:
(x\ -\ x_1) )
where )
and )
are the coordinates of the given points.
Simplify and put the equation into slope-intercept form, 
Then 
will be the initial monthly salary and 
will be the annual increment.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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