Eva earns $12 an hour Helen earns $15 per hour. if eva worked 1 1/12 hours and Helen worked 2 1/5hrs. Whats the total of their earnings?

Let's first look at how much money Eva has earned through her work. We know that she worked one hour,, meaning that she earned $12. In order how much she earned by working [tex] \frac{1}{12} [/tex] of an hour,, you must multiply how much she makes per hour ($12) by how much she worked ([tex] \frac{1}{12} [/tex]). 
12 x [tex] \frac{1}{12} [/tex] = $1
When you add 12 and 1 together,, you will find that Eva earned $13 by working 1 [tex] \frac{1}{12} [/tex].
Now we must look at how much Helen has earned. We know that she worked for 2 hours,, earning $15 per hour. Knowing that she has already earned $30,, we must now find out how much she earned by working [tex] \frac{1}{5} [/tex] of an hour. To find this out you must multiply how much she earns per hour ($15) by how much she worked ([tex] \frac{1}{5} [/tex]). When you multiply these numbers together,, you will find that Helen earned $3 for working [tex] \frac{1}{5} [/tex] of an hour. When you add $3 to the other $30 she earned,, you will find that Helen earned $33.
This means that the final answer to your question is that Eva earned $13 while Helen earned $33.
Let me know if you have any further questions
:)