During a cricket match, the scorer recorded the number of runs scored using his computer. After the match had ended, he was asked to submit a report consisting of the runs scored at the end of every \(10\) overs.
He submitted the following graph. Look at the graph and answer the questions that follow.
In the graph, \(x\)-axis denotes the number of overs, and the \(y\)-axis denotes the number of runs scored.
1. How many runs were scored at the end of \(40\) overs?
The number of runs is runs.
2. What is the difference between the number of runs scored at the end of \(30\) overs and \(50\) overs?
The difference is runs.