2/3 of an hour= 40 minutes 3/4 of 40= 30 minutes 40- 30= 10 So, it took Bethany 10 more minutes to complete her science homework than her math homework.
This is because 2/3 of an hour is 40 minutes and 3/4 of 40 is 30. 40-30=10. Therefore it took Bethany 10 more minutes to do her science homework than it did her math.
1 foot = 12 inches, so now you add 3 inches until you get 12. you add 3, 4 times toget 12. 3+3=6+3=9+3=12 and do that again for the 2nd foot 3+3=6+3=9+3=12 you added 3, 4 times to get 12 twice so now add 4+4=8 YOUR ANSWER IS 8
