Andrew sets out to cycle from Kirkton to Simsburgh at exactly the same time as Mike left Simsburgh ...

Andrew sets out to cycle from Kirkton to Simsburgh at exactly the same time as Mike left Simsburgh to cycle to Kirkton along the same route. The two passed each other at the point on the route 4 miles from Kirkton. Each cyclist continued to his destination turned and immediately started cycling back towards his starting point at the same rate. This time they met 2 miles from Simsburgh. Assuming that Andrew and Mike travelled at constant speeds, how far is it from Kirkton to Simsburgh? Given that Andrew's speed is v mph what is Mike's speed?