percent change questions

Question

anonymous · Answer

1. Kemi invested money in two types of mutual funds:$2800 in low risk funds and $700 in high risk funds. IF the value of the low risk funds dropped by 10% and that of the high risk funds grew by 30%, by what percent did the total value of her investments change? 

2. A clothing retail outlet purchased clothes in bulk from a wholesaler for $86850. This was after a discount of 3 1/2% on the purchase. Calculate the original price of the clothes.

anonymous · Answer

3.The revenues of a company increased by 30% in year one and decreased by 25% in year two. What is the overall change over the two year period?

dangerousjesse · Answer

$2800\times.10=?$
$700\times 1.30=?$

anonymous · Answer

how come $700 is multiply by 1.30? and not 0.30?

anonymous · Answer

280 and 910

dangerousjesse · Answer

Because it's increased by .3, so you'd say 700+700.3 or 700*1.3 :)

dangerousjesse · Answer

Yes, that's right :) Now subtract $2800-280$

anonymous · Answer

2520

dangerousjesse · Answer

And 2520+910=?

anonymous · Answer

3430

anonymous · Answer

thing is I don't know whats after. I did the steps till here. answer is given in textbook but not sure how to get there

dangerousjesse · Answer

And that's a decrease of 26.53%

dangerousjesse · Answer

Sorry, it took me a minute to work it out :P

dangerousjesse · Answer

You subtract $3430-2520=910$ Then $910\div 3430=26.53%$ :)

dangerousjesse · Answer

26.53 percent I mean

anonymous · Answer

answer in the book is -2%

dangerousjesse · Answer

I give up, then. My answer added up either way :P