Question: In a cricket match between India and Australia, Suresh Raina was playing at 91 runs, how many more runs he needs to complete a century ?
Answer: Key of this question is the meaning of a century. A century is 100. A century is common word to represent year, numbers and most of the countable things. In this example century is speaking about runs in a cricket match.
As per the question, Suresh Raina has already scored 91 runs and it's asking how many more runs he needs to complete 100 runs. We can write question as below:
100 runs = 91 runs + X runs (to complete a century)
Hence; X = 100 − 91. Result of this comes as 9 runs.
So, Suresh Raina needs 9 more runs to score a century.