John's salary last year was $80000. Last year he got a raise of 10%. This year the company lost money and his salary was cut back to $80000. By what percent did his salary decrease this year?

9.09%

Step-by-step explanation:

John Salary = $80,000.

Raise = 10% of salary = 10/100*80,000=$8000

New Raised Salary = 80000 + 8000 = $88000  

Cut back = 80000

Decrease % =  (88000-80000)/88000*100

Decrease % = 8000/88000*100

Decrease % = 9.09%

power property.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%