Meryll wants to write 35 multiple-choice questions and 15 problem-solving questions for her Chemistry class. She already has written 2/5 of the multiple-choice and 1/3 of the problem-solving questions. How many more questions does she need to write for both multiple-choice and problem-solving?
Meryll has written 35 questions x 2/5 = 
<gadget id="calculator">35*2/5</gadget>
<output>14</output>
14 multiple-choice questions.
While she has written 15 questions x 1/3 = 
<gadget id="calculator">15*1/3</gadget>
<output>5</output>
5 problem-solving questions.
The total number of questions that Meryll has to write is 35 questions + 15 questions = 
<gadget id="calculator">35+15</gadget>
<output>50</output>
50 questions.
Meryll has written a total of 14 questions + 5 questions = 
<gadget id="calculator">14+5</gadget>
<output>19</output>
19 questions.
Hence, she needs to write 50 questions - 19 questions = 
<gadget id="calculator">50-19</gadget>
<output>31</output>
31 questions more.

<result>31</result>