Is it
a 33/87
b 43/87
c 11/76
d 76/87

d. 76/87

d. 76/87

Step-by-step explanation:

Out of all the flights, we're looking for the on time ones, so that's the first column. Add together the flights of both airlines:

33 + 43 = 76

Put this number over the total number of flights:

76/87 is the answer.

725 parts per hour.

step-by-step explanation:

hi there, this answer is actually really simple.

you can set it up as 1450/2 or 3625/5 to find the answer.

they want to know how much per hour is being made, so you just divide.

1450/2=725.

and that's how many are produced per hour.

hope this . : )

step-by-step explanation: yes