In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If Jack’s score in five successive rounds were \(\rm{}25, –5, –10,15, 10.\) What was his total in the end?

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**What is known?**

Jack’s score in five successive rounds.

**What is unknown?**

Jack’s total score in five rounds.

**Reasoning:**

Just add the scores in five rounds to get the total score.

**Steps:**

Jack’s scores in the five successive rounds are \(25, –5, –10, 10\) and \(15\)

Total marks obtained by jack

\[\begin{align}& = 25 + \left( { - 5} \right) + \left( { - 10} \right) + 10 + 15\\& = 25-5-10 + 10 + 15\\& = 35\end{align}\]

Thus, jack obtained \(35\) marks in the quiz.