Problem Out of 100 freshmen in a university, 60 are taking English, 50 are taking History, 30 are taking Mathematics, 30 are taking both History and English, 16 are taking both English and Mathematics, 10 are taking both History and Mathematics and 6 are taking all three courses. How many of the freshmen enrolled in either English, History or Mathematics?​

100

Step-by-step explanation:

The entire total number of freshman are taking English, History or Mathematics. Since it says "or" and lists all subjects discussed, they all are enrolled in either English, History or Mathematics.

i dont know sorry

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.