A field that is 2/3 acres must be planted with seed. If 12 people will split the job equally, how my acres must each person plant?

.05 an acre

2/3 acre would be .6 (repeating).

12 people would split .6 it is .05 an acre

Let your number be X. Alex's number will be your number, plus 2x, plus 11. (x+2x+11) = 5.

From there we will have x+2x, which is 3x. So now we have 3x+11 = 5.

Subtract 11 from both sides, leaving us with 3x = -6.

From there we need to divide both sides by 3. Leaving us with x = -2.

Now that we know your number (-2), we can find Alex's number.

So from the word problem, we know that Alex's number is 11 more than twice your number. (2*-2+11) = 5.

So we have 2 times -2, which is -4. -4 plus 11 is 7.

To check our answer we need to add both of these two numbers together and see if they equal 5.

So 7-2 (or -2+7) will be 5. Confirming Alex's number to be 7.