Help me with these percentage questions?

Question

1. If the rate of inflation is 2.75 % p.a., what will a car pricaed at $27 990this year be priced at in 12 months time?

2. I bought real estate valued at $220 000. In the first yearmy investment increased by 12%, but in the second year the value dropped by 7%. What is the valueof the property at the end of the second year?

3. I instructed my stock broker to buy 1000 shares at $1.82 each. i told him to sell at a price that guranteed a 15% profit or alternatively at a price that limited my loss to 5%. At what prices should he sell the shares?

4. I can invest money at 5.75%. How much should i invest now to ensure that i have $5000 after 1 year?

PLEASE DO IT FOR ME. I get child abused for not doing my home work correctly, think i'm lieing check out my other questions. With working out please.

Answer 1

if you are being abused, you need to speak to someone about this immediately.

n=number of years.

1. 27990(1.275)^n

therefore, after one year the car should be priced at $35687.25

most are based around the above formula.

it's importnant that you understand how to do these equations.  

Answer 2

These are pretty basic.  I'll give you the set up, but try doing the math yourself.  If you really are being abused (and by that, I don't mean just made to stay home or having tv privileges taken away), you need to contact someone who can help, e.g.... grandparents, teacher,  principal, police officer, school nurse, etc.

1.  $2799 * .0275 + $2799 = new price

Note:  To skip the step of adding back in the original price, you get the same result if you multiply by 1.0275.

2.  $220,000 * 1.12 (using hint above) = price after one year

From that result subtract .07(price after one year) = price after 2 years

3.  In this one it makes no difference if you bought 1000 shares or only 1, but here is how to do it.

$1.82 *1.15 = sell price if making a profit

$1.82 - (1.82*.05) = sell price if taking a loss (This one you can also do in the opposite way, that is .95($1.82)--this works because if you take a 5% loss you only have 95% left

4.  X (investment amount) * 1.0575 = $5000

X = 5000/1.0575