Urgent Math question....

[M.Omar]

John throws in an investment of $168000 to start a business at the start of the year.6 months after,Harold joins him with a capital/investment of $144000.A month after that,Edward throws in his lot with a $324000 investment.At the end of the year,a profit of $40,000 is made.Calculate the share of each,if the share is to be proportional to their investments.
(Pay due regard to the time of investment in this question,it ai,nt simple as it may appear)

 

[SalmanPakRocks]

John throws in an investment of $168000 to start a business at the start of the year.6 months after,Harold joins him with a capital/investment of $144000.A month after that,Edward throws in his lot with a $324000 investment.At the end of the year,a profit of $40,000 is made.Calculate the share of each,if the share is to be proportional to their investments.
(Pay due regard to the time of investment in this question,it ai,nt simple as it may appear)

It's more like accounts than Maths.
Profit for John = 168000/168000 + 144000 + 324000
= 168000/636000 * 40,000 = $10566

 

[M.Omar]

That,s the point.IT AI,NT SIMPLE AS IT MAY APPEAR........Pay due regard to the time of their investments as it affecets the rate of profit during that whole year.In short the answer is incorrect.....why do you think i post it if it were that simple....I found the answer before though i was not completely sure on my arguements

 

[Drockz]

u may have figured it out by now but i just wanted to check anyway . Are the answers supposed to be as follows ? John - 17920 , Harold - 7680 and Edward -14400 ..... p.s. if the ans are correct , then i would explain how to work it out for u.

 

[M.Omar]

u may have figured it out by now but i just wanted to check anyway . Are the answers supposed to be as follows ? John - 17920 , Harold - 7680 and Edward -14400 ..... p.s. if the ans are correct , then i would explain how to work it out for u.

Yeah!these are the set of answers

 

[Drockz]

interest is calculated using the equation I=PRT where p is principle , r is rate and t is time in years. so.... 168000 (p) × x/100 (r)× 1 (t) + 144000 (p) × x /100× 6/12 + 324000 × x//100 × 5/12 = 40000 ....... where x is the rate which is not given in the question and which we have to find. by solving this equation , u will get X as 10.66667 . next , substitute this X. John - 168000 ×10.666667/100×1 =17920 , Harold - 144000×10.66667/100 ×6/12 = 7680 , Edward - 324000 × 10.666667/100 × 5/12 =14400

 

[M.Omar]

interest is calculated using the equation I=PRT where p is principle , r is rate and t is time in years. so.... 168000 (p) × x/100 (r)× 1 (t) + 144000 (p) × x /100× 6/12 + 324000 × x//100 × 5/12 = 40000 ....... where x is the rate which is not given in the question and which we have to find. by solving this equation , u will get X as 10.66667 . next , substitute this X. John - 168000 ×10.666667/100×1 =17920 , Harold - 144000×10.66667/100 ×6/12 = 7680 , Edward - 324000 × 10.666667/100 × 5/12 =14400

Rock ON!Though interest has little to do with the question,I do get the concept of the interest equation..Thnx..
That concludes this thread