Problema Solution
to make an international telephone call, you need the code for the country you are calling. The codes for a country A, country B, and C are three consecutive integers whos sum in 105. Find the code for each country.
Answer provided by our tutors
let the three consecutive integers be
x-1, x, x+1 that is
the code of country A is x-1
the code of country B is x
the code of country C is x+1
where x is the integer
the sum of the three numbers is 105
(x - 1) + x + (x + 1) = 105
by solving we find
x = 35
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35 - 1 = 34
35 + 1 = 36
the code for country A is 34, the code for country B is 35 and the code for country C is 36.