The mean proportion of a and \(\frac{a}{b2}\) is ___________
The bar chart shows the favourite colour of 380 students in a class. Study the bar chart and answer the questions based on it.
The total number of students whose favourite colour are Blue, Magenta, Red and Yellow is what % (rounded off to the nearest integer) of the total number of students in the class?
A man takes 8 hours 30 minutes to go to a place by bicycle and return from there by scooter.
If he travels both ways by bicycle, it takes him 10 hours. How much time will he take to travel both ways by scooter? (in hours?)