Answer:
37) Change in altitude per minute = 200 ft
38) Number of questions answered incorrectly by Michael = 3
Number of questions answered incorrectly by Nythia = 4
Number of questions answered incorrectly by Raul = 1
Number of questions answered incorrectly by Tonya = 7
Step-by-step explanation:
37)
- Find the change of altitude.
Change of altitude in 15 minutes = 10000 - 7000
= 3000 ft
- To find the change of altitude in 1 minute, divide 3000 by 15 minutes.
Change of altitude per minute = 3000 ÷ 15
= 200 ft
38) It is given that 6 incorrect answers carry (-24) marks. We find the mark of one incorrect answer by dividing (-24) by 6.
Mark lost for one incorrect answer = -24 ÷ 6
= -4
To find the number of questions answered incorrectly by each student, divide the marks lost for incorrect answers by (-4).
Number of questions answered incorrectly by Michael = (-12) ÷ (-4)
= 3
Number of questions answered incorrectly by Nythia = (-16) ÷ (-4)
= 4
Number of questions answered incorrectly by Raul = (-4) ÷ (-4)
= 1
Number of questions answered incorrectly by Tonya = (-28) ÷ (-4)
= 7
