MF graduate

78 school students graduate from mathematics or physics. There are three times more students who graduate from mathematics and do not graduate from physics than those who graduate from physics and do not graduate from mathematics. 69 students graduate from mathematics. How many students graduate from mathematics and physics?

Correct answer:

p =  42

Step-by-step explanation:


m+f+p=78
m=3f
m+p=69

m+f+p=78
m=3•f
m+p=69

f+m+p = 78
3f-m = 0
m+p = 69

f = 9
m = 27
p = 42

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







Tips to related online calculators
Do you have a system of equations and looking for calculator system of linear equations?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: