SOLUTION: English is spoken as the first or primary language and 78 more countries than Farsi is spoken as the first language. Together, English and Farsi are spoken as a first language in 1

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Question 1193443: English is spoken as the first or primary language and 78 more countries than Farsi is spoken as the first language. Together, English and Farsi are spoken as a first language in 130 countries. In how many countries is English spoken as the first language? and how many countries is Farsi spoken as the first language?
Found 2 solutions by ikleyn, Edwin McCravy:
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.

    E      + F = 130


    (F+78) + F = 130

      2F + 78  = 130

      2F       = 130 - 78

      2F       =    52

       F       = 52/2 = 26.


ANSWER.  26 Farsi;  130 - 26 = 104 English.


CHECK.   104 - 26 = 78,  correct.

Solved.



Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!


Let N = the number of countries in which Farsi is the first language.  Then,
N+78 = the number of countries in which English is the first language.

The equation is

N%22%22%2B%22%22N%2B78%22%22=%22%22130

You finish.

Edwin