The decimal i am thinking of is 3 tenths greater than 80%. what is my decimal

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have