Question about The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac

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Mathematical Calculation Good Day, My mathematical problem is as follows: Say I need to calculate the amount to invest on 6 companies to get a profit of say $300-00 plus the amount I invested on all 6 companies. As per the table pasted below, I need a formula to calculate the invest amount for each company so that I will always have a profit of $300-00. Hint: Only 1 company gives a return and the rest you loose. Hint 2: I tried to calculate the Lowest Common multiple to resolve this but it does not always work. Please assist. Company Return RateInvestment AmountTarget Profit $ A5.4?300 B8.9?300 C11.1?300 D6.7?300 E4.3?300 F7.1?300 Jowi South Africa

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Re: Mathematical Calculation

Following formula we can use.


EX : (300+x) = x(1+(5.4/100)*1)
(300+x)*100 = 105.4x
x=5555. 4

Posted on Feb 19, 2008

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Pls i need equation for :- The sum of N1200 is invested in three project X,Y,Z at the ratio of 4,5,6 respectively. The expected cash inflow per annum is N700. the combined income for projects X and Y is...

Two ways to get to the same answer:
1) If X,Y, & Z are invested in the ratio of 4:5:6 then the amount invested in Z is 6/(4+5+6) times the total of N1200
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= N480
(Note: X is 4/15 and Y is 5/15 of the total investment,
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2) The second sentence says: Income from X plus income from Y minus income from Z is N140 and total income is N700. Total income is 700/1200 of the investment.
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(Inc X + Inc Y) - Inc Z = 140 (rewriting: Inc X + Inc Y = 140 + Inc Z)
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How many 6 number mathematical combinations are there using 38 numbers

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What are the equations and its kinds?


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There are many types of mathematical equations.

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Math Word Problem

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