Study the given table and answer the question that follows. The given table depicts the percentage of marks scored by Mary and Perul in History and Physics (out of 75 each). Mary 60 64 Perul 54 70 How many marks did Mary score in History? Name History Physics
45
To find how many marks Mary scored in History, we start by understanding the information given:
- The full marks for History are 75.
- Mary scored 60% in History.
The percentage formula is given by:
Percentage = (Marks Scored / Total Marks) × 100
We rearrange this formula to calculate the Marks Scored:
Marks Scored = (Percentage × Total Marks) / 100
Substituting the given values:
Marks Scored = (60 × 75) / 100
This simplifies to:
Marks Scored = 4500 / 100 = 45
Therefore, Mary scored 45 marks in History.
Important Questions from Measures of Central Tendency
What is mean deviation about the median ?
The mode and median of a data is 26.7 and 71, respectively. What is the mean of the data? (Use empirical formula.)
The average of eight numbers is 14. The average of six of these numbers is 16. The average of the remaining two numbers is:
The value of
(1 + cot²θ)(1 + cosθ)(1 - cosθ) - (1 - sinθ)(1 + sinθ)(1 + tan²θ) is: (θ lies in the first quadrant)
The score in Maths of 50 students of a class is given in the following table. Calculate the mean score.
Interval Frequencies 0-10 2 10-20 11 20-30 28 30-40 6 40-50 3
