The given histogram shows the frequency distribution of the speed of cars passing through a particular spot on a highway. Read the graph and answer the following question.

What percentage of cars were running with the speed of 90km/h and above ?

11.25%

Number of cars running with speed 90 km/h and above  = 45

Total number of cars = 50 + 70 + 85 + 90 + 60 + 45 = 400

Required percentage =  \(\frac{45}{400}\) × 100

= 11.25%