Lena invested her savings in two investment funds. The amount she invested in Fund A was twice as much as the amount she invested in Fund B. Fund A returned a 4% profit and Fund B returned a 2% profit. How much did she invest in Fund B, if the total profit from the two funds together was $600?

Yes, we can HELP solve. Show us your work first.

This is clearly a homework problem involving simultaneous equations, so we require that you show us what you have tried to do to solve this problem on your own. Have you tried to set up two equations with two unknowns that describe the data you have been given?