Edit: Nah that was wrong Kak. It's actually Interest / Time / Principal = Interest / Time * Principal Tbh though I'm a bit confused as to what the principal is...

I guess I know how to figure out the mystery number, but not how exactly it should be written in formula. I do know this formula (raff+math=retarded squared) Sorry I cant help more. The first question can be figured out by multiplying, and the second by dividing though as we said before. How that translates into a formula.....*throws hands up*

To be honest all the solutions given to the original question are simplistic as they take no account of compounding (interest on interest) If compounded the formula is: I = (P(1+R)^n)-P (Note: ^n = raise to the power of ~ can't do superscript characters on forum) The simplified non-compounded formula (as stated by others) is: I = P*R*n If using simple formula (ignoring compounding) R = I/(P*n) (I=interest earned, P=principal, R=interest rate as a decimal, n=no of years)

wow. you guys. no accountants in the house...or even people who passed grade 11 math it seems. (edit: apologies, elladan got it.) compound interest folks. here's how you figure it out elven $100 * 1.04 = $104 (first year with interest) $104 * 1.04 = $108.16 (second year and final total) there's a formula, but f'd if i remember it. i'm 30 and it's been sometime since college even.

You're not supposed to solve the question. You're supposed to provide a workable equation. No marks will be awarded for solving it.

Interest[$]=(Rate[/year]^Period[year])*Base($) Interest = (1.04^2)*100 = $108.16 components with units between text brackets. * for multiplying ^ for power EDIT: nevermind; I didn't quite see the second page... with the right answers

Moooooore maaaths!!!!!! teeheeeeeeeeee soo... there's this grocer who's trying to sell his latest batch of 300kg of cucumbers. Admitedly, he's not the sharpest knife in the drawer and displays his latest asset in the blazing sun of a warm day in July. Now, the reason it's his pride, the pick of the crop, so to say, is because he knows their water content is 99% - quite the number for a cucumber. Sadly, he doesn't sell a single one. At the end of the day, he's stuck with the same cucumbers, but now it appears it's water content dropped to 98%. Question is: what's the weight of the batch after this hot day in July?