0 | 52 | 78 | 99 | ||
0 | 64 | 75 | |||
52 | 64 | 0 | 25 | 31 | |
78 | 25 | 0 | 84 | ||
99 | 75 | 31 | 84 | 0 |
The table above shows the distance, in miles, by the most direct route, between any two of the five cities and
. For example, the distance between City
and City
is
miles. What is the value of
?
(1) By the most direct route, the distance between and
is three times the distance between
and
.
(2) By the most direct route, the distance between and
is four times the distance between
and
.