Question

To make an international telephone call, you need the codes for the country you are calling, the codes for another country, and consecutive integers whose sum is 75. Find the code for each country.

Answer 1

To make an international telephone call, you need country codes for both the originating and destination countries, as well as consecutive integers whose sum is 75. By solving a system of equations, you can find the specific country codes.

Step-by-step explanation:

To make an international telephone call, you need the country codes for both the originating and destination countries, as well as consecutive integers whose sum is 75. Let's call the code for the originating country 'x' and the code for the destination country 'y'.

From the given information, we can write two equations:

1. x + y = 75
2. the country code for the originating country is '8642'

We can solve the system of equations to find the specific country codes. Rearranging the first equation, we have y = 75 - x. Substituting this into the second equation, we get:

8642 + (75 - x) = y.

Therefore, the country code for the destination country is 8642 + (75 - x).