We can write the ratio of 8 megabytes to 13 megabytes as follows:
To reduce a fraction, we have to list the factors of the numerator and denominator and then divide both the numerator and denominator by the great common factor.
In this case, the factor of 8 are 1, 2, 4, 8 and the factors of 13 are 1, 13, since these numbers have not a common factor exept for one, we conclude that the fraction 8/13 can't be reduced further, then the answer is 8/13