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Standard Math Q+A Thread

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LoneWolf:
legend thats awesome.

thanks again.

LoneWolf:
Hey people
Struggling with this!
Any suggestions?

StudyNinja:

--- Quote from: LoneWolf on April 20, 2020, 08:26:49 am ---Hey people
Struggling with this!
Any suggestions?


--- End quote ---

Interest is compounded monthly but quoted per annum so first convert interest rate to monthly:
Monthly interest rate will be = 7.4% / 12 = 0.616667%

Part (a) asks for future value after 4 years (4 years have 48 months):
Using future value formula: 16400 x (1 + 0.616667%)^48 = 22,029

Regarding part (b), I am unclear if it is asking compound interest earned after 4 years or after 6 years. I am assuming it is continuation of part (a) and asking compound interest earned after 4 years in which case interest earned will simply be Future value after 4 years - Initial value of investment
22029 - 16400 = 5,629

Hope this helps

LoneWolf:
Thanks for that dude. that was quite easy!

frodoyo:
hi everyone,

I'm really stuck on this question about network diagrams. I tried drawing one out but I'm not too sure if my diagram is correct. For part b, I don't see how changing (I) will affect (J), so could someone please lend a hand?

thank you!

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