Average is the mean of a given set of data. The average of a set of data is calculated by adding all the values and dividing it by the number of values. Mathematically, it can be expressed as,

Average = (Sum of data)/(Number of data)

In the given question, Meenu’s average marks in 7 subjects is 68.
Therefore,

Average = (Sum of data)/7

68 = (Sum of data)/7

Sum of data = 68*7 = 476

Meenu’s average in 6 subjects excluding English is 70.
Therefore,

Average = (Sum of data)/6

70 = (Sum of data)/6

Sum of data = 70*6 = 420

Subtracting the two equations,

476 - 420 = 56

Thus, Meenu’s marks in English is 56.

Hence, option C. 56 is the correct answer.

If you think the solution is wrong then please provide your own solution below in the comments section .

• The cricketer's average for 15 matches is 24 runs. Therefore, his total runs in 15 matches would be 15 x 24 = 360 runs.
• In the next five matches, he scored 75, 40, 12, 36, and 57 runs. Therefore, his total runs in these five matches would be 75 + 40 + 12 + 36 + 57 = 220 runs.
• His total runs in all 20 matches would be 360 + 220 = 580 runs.
• To find the new average, we divide the total runs (580) by the total number of matches (20): 580 / 20 = 29 runs.

• Average (also known as mean) is a statistical measure that represents the central value of a dataset. It is calculated by summing up all the values in the dataset and dividing by the number of values.
• To calculate the average of a set of numbers, we use the formula: Average = (Sum of values) / (Number of values)
• In this problem, we are given the average (24 runs) and the number of matches (15). We use the formula to find the total runs (360 runs) in those matches.
• We are then given the runs scored in the next five matches, and we add them up to find the total runs (220 runs) in those matches.
• We add the total runs from both sets of matches to find the total runs (580 runs) in all 20 matches.
• Finally, we use the formula to find the new average (29 runs) for all 20 matches.