Benny was told to practice playing piano for 4/11 of an hour per day. Benny has already played 3/14 of an hour today. How many h
ours does Benny still need to practice today? What are the given facts?
What is asked in the problem?
What is the hidden question?
What are the operations to be used?
What is the nuber sentence?
What is the answer to the problem?
(Please answer fast. If you answer, thank you very much!)
He still needs to play 0.15 of an hour or 3/20 of an hour.
Given facts - Amount he has to play, and the amount he played. Question - For how long does he need to practice to meet the required time. Hidden question - There is nothing hidden Operations used - divisions (not necessary), subtractions and conversion (only if used division). Number sentence - 4/11 - 3/14 = x Answer - 3/10 of an hour.
Steps: 1. Multiply the first line by 3 and the second by 2 3(3x + 2y= 4) 2(8x -3y=-6) 2. New lines are 9x + 6y= 12 16x + -6y=-12 3. Now add/subtract them 25x + 0= 0 25x=0 4. Divide by 25 X=0
5. To find y, substitute the 0 in the x in one of the equations
9x + 6y= 12
9(0) + 6y= 12
6y= 12
6. Divide by 6, your Y=2
7. X=0, Y=2
