Need Help! As soon as possible.

Which fraction below is equivalent to 10/12?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.