Whitnee S.
asked • 12/21/16Amount invested
Shonda invested her savings in two investment funds. The amount she invested in fund A was $4,000 less than the amount she invested in Fund B. Fund A returned a 7% profit and fund B returned a 3% profit. How much did she invest in fund B , if the total profit of the two funds together was $1620?
More
1 Expert Answer
Gregg K. answered • 12/21/16
Tutor
5.0
(391)
Effective Math Tutor Specializing in AP Calculus AB/BC , AP Statistics
Fund B: X
Fund A: X-4000
These are the 2 investment amounts
.03X + .07(X-4000) = 1620
Multiply by 100 to get rid of decimals
3X + 7(X-4000) = 162000
Now solve for X (fund B amount)
Once you solve for X , subtract 4000 to solve for fund A amount
Whitnee S.
Multiply what by 100
Report
12/21/16
Gregg K.
tutor
Both sides of the equation
Report
12/21/16
Gregg K.
tutor
Notice how the equation
3X + 7(X-4000) = 162000
Does not have the decimal values of .03 and .07. Multiplying both sides of the equation by 100 was an optional step.
We could have left them as .03 and .07
.03X +.07(X-4000) = 1620
.03X +.07X - 280 = 1620
.10X = 1900
X = 19000
Report
12/21/16
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
Whitnee S.
12/21/16