I think I've seen this word problem before. Is it from University of Phoenix?
Either way, this is a word problem that you have to use a system of two equations with two unknowns to solve. Since it asks you "How much did he invest in fund A?" you know that one of your unknowns is going to be "the amount he invested in fund A." The other variable might as well be "the amount he invested in fund B."
From there, your mission is to take the information they give you and turn it into two equations involving "the amount he invested in fund A" and "the amount he invested in fund B." A strong hint: you can turn "The amount he invested in fund A was $8000 less than the amount he invested in fund B" into one equation, and you can turn "Fund A returned a 7% profit, fund B returned a 6% profit, and the total profit from the two funds together was $2300" into a second equation.
One other piece of information you'll need to know is how to calculate profit. Maybe you already know this, but just in case.... Suppose you invest $1000 into a fund and get a 5% profit. The amount of profit you get in dollars is $1000 * 5 / 100, which is $50 -- you take the amount you invested, multiply by the profit percentage, and divide by 100. In your question, you don't know how much is invested, so you'll leave that part as a variable, but you do know the percentage, and the 100 is still the same.
Hopefully this helps. Once you have two equations with two unknowns, come on back and we can talk about how to solve them. :-)
Either way, this is a word problem that you have to use a system of two equations with two unknowns to solve. Since it asks you "How much did he invest in fund A?" you know that one of your unknowns is going to be "the amount he invested in fund A." The other variable might as well be "the amount he invested in fund B."
From there, your mission is to take the information they give you and turn it into two equations involving "the amount he invested in fund A" and "the amount he invested in fund B." A strong hint: you can turn "The amount he invested in fund A was $8000 less than the amount he invested in fund B" into one equation, and you can turn "Fund A returned a 7% profit, fund B returned a 6% profit, and the total profit from the two funds together was $2300" into a second equation.
One other piece of information you'll need to know is how to calculate profit. Maybe you already know this, but just in case.... Suppose you invest $1000 into a fund and get a 5% profit. The amount of profit you get in dollars is $1000 * 5 / 100, which is $50 -- you take the amount you invested, multiply by the profit percentage, and divide by 100. In your question, you don't know how much is invested, so you'll leave that part as a variable, but you do know the percentage, and the 100 is still the same.
Hopefully this helps. Once you have two equations with two unknowns, come on back and we can talk about how to solve them. :-)
