How do you do the percent kind of math this is hard will you me

Of means multiply so if it says 50% OF 83 then multiply and then multiply with the other number outside of the parentheses.
But for number 2 turn the fraction into a percent. I know what you're thinking,"But Taeminnie10 how can I turn 1/3 into and percent?" It's just 33.33. Multiply 33.33 by 6.399 and do the same steps for everything else. Hope this helped!

Area of CMB = 12

Area of ABC = 24

Step-by-step explanation:

IDK how to prove it exactly but using logic I will go through the steps to findign the answer.

if DM is the midpoint of BC, it splits BC in half which also splites the area of BMC into two equal parts.

If the area of BMD = 6 and CMB = BMD * 2 then CMB = 6 * 2 = 12

Area of CMB = 12

If BM is the midpoint of AC, it splits AC in half which also splits the area into two equal parts.

If the area of CMB = 12 and ABC = CMB * 2 then ABC = 12 * 2 = 24

Area of ABC = 24