Answer:
Suppose the distance from q to p is 12 metres.
then, distance travelled b y car m 2/3 will be:
12 * ⅔
= 24 / 3
= 8 metres
and distance travelled by car n 3/4 will be:
12 * ¾
= 36 / 4
= 9 metres
under these conditions, the fraction of distance b/w them will be:
9 - 8
= 1 metres
And under general conditions, (same as above)
¾ - ⅔
by taking L.C.M
= 9-8/12
= 1/12 fraction