Answers

2016-01-19T19:38:38+05:30
Average speed = speed 1 + speed 2/ 2
50 mph + 65 mph/2
115/ 2
57.5 mph
0
2016-01-21T19:58:17+05:30
Av Speed= (1st speed + 2nd speed)÷2
∴    Av speed=(50+65)÷2
                      =115÷2
                      =57·5
0