Two persons Ramu dhobi and Kalu mochi have joined Donkey Work Associates .Ramu dhobi and Kalu mochi started with initial salary of 500 and 640 with annual increment of 25 and 20 each respectively.In which year which Ramu dhobi will start to earn more salary than Kalu mochi?

Question

texaschic101 · Answer

y stands for # of years
500 + 25y > 640 + 20y
25y - 20y > 640 - 500
5y > 140
y > 140/5
y > 28

so in year 28, Ramu earns more then Kalu
any questions ?

texaschic101 · Answer

you might need to get a second opinion on this

mathmath333 · Answer

2nd?

mathmath333 · Answer

can this be solved using progressions

texaschic101 · Answer

I am not sure...hold on...lets get someone over here that might know what they are doing

texaschic101 · Answer

@phi ...help

mathmath333 · Answer

but answer is 29 (book)

texaschic101 · Answer

oh...I see.....mine is right then. I got y > 28....and since it is greater then 28, then it has to start at 29