A man starts at 6 a.m and walks to his friend's house situated 8 km away. He walks 3 km at a speed of 4 km/h, reduces his speed to 3 km/h amd covers the rest of the distance.
1. At what time will he reach his friend's house?
2. Find his average speed correct to one place of decimal.

1. time he will reach is 10a.m.
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