Jack is learning to save, spend, and give his money away. he has determined to give away 10% of his summer job earnings. if he gives away $256, how much did he earn this summer?

$2560

Step-by-step explanation:

if 10%=256

then 10 times the amount 100% is 2560

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%