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 .