This question was previously asked in

MPPEB Stenographer 31 July 2018 Shift 1 Official Paper

Option 1 : 104 km/hr

**Given **

Ratio of speed of car, train and bus = 6 : 7 : 5

**Formula used **

Average = Sum of Data/No. of data

**Calculation **

Let the ratio be x

96 = (6x + 7x + 5x)/3

⇒ x = 96 × 3/18 = 16

Average speed of car and train = [6(16) + 7(16)]/2

⇒ (96 + 112)/2 = 104 km/hr

**∴ The required answer is 104 km/hr **