A few days ago
LevelUP

Investment Problem help?

I dont want only the answer, I want to know how you got it, and show all of your work if possible please!

1)Melissa Invested her P5000 for 3 years, and it earned a total of P1,200. At what rate of interest did she invest her money?

2)A sum of P200,000 is split between two investments, one paying 7% interest, and the other on 8%. If the return on the 8% exceeds that on the 7% investment by P4000 per year, how much was invested at each rate?

**Remember, I want the details on how you solved it I’m having a bit of trouble on this subject..

Top 1 Answers
A few days ago
Bananaman

Favorite Answer

I’m only showing the steps in doing the problems.

1)

n= number of years

i = interest

Interest earned

= (Initial amount) x (1 + i)^n – (Intial amount)

1200 = 5000 x (1 + i)^3 – 5000

Solve for i here

2)

Let the investment in one of them be F

Therefore, the investments are F and (200,000 – F)

(F x 0.08) – ((200,000 – F) x 0.07) = 4000

Solve for F here

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