Q: Arman is six times older than his sister. His sister is 2 years old four years ago. In how many years will Arman's age be 40?
A: Arman's sister is 4 + 2 = 6 years old now. So, Arman is 6 x 6 = 36 years old. Hence, Arman will be 40 in 40 - 36 = 4 years. The answer is 4.

Q: After uploading her video to Youtube, Kallie received 4000 views on the first day. When she checked her channel 4 days later, she realized that the number of views had increased by a number ten times more than the views on the first day. If 50000 more people viewed the video after another two days, determine the number of views the video had gained on Youtube?
A: If the number of views on the first day was 4000, the video's views on Youtube increased by 10 * 4000 = 40000 after four days. The total number of views of the video on Youtube after four days was 40000 + 4000 = 44000. If 50000 more people viewed the video, the total number of views that the Youtube video had is 44000 + 50000 = 94000. The answer is 94000.

Q: Sasha can complete 15 questions an hour. If she has 60 questions to complete and she works for 2 hours, how many questions does she still need to complete?
A:
Sasha completes 15 questions / hour * 2 hours = 30 questions. This means there are still 60 questions – 30 questions = 30 questions left to complete. The answer is 30.