Find the difference between the medians of boys and girls as a multiple of the interquartile range for the boys.

a. 3/4
b. 7/8
c. 1 1/8
d. 1 1/2

Five number summary:
                           Boys           Girls
minimum           66                 61
q1                       68                 63
median             69                  65.5
q3                       72                 68
maximum         74                 69
IQR
(q3-q1)               4                    5

difference between the medians of boys and girls is:  69 - 65.5 = 3.5

3.5/4 = 0.875  
3.5/4 * 2/2 = 7/8

Answer is choice B. 7/8

You just divide and you will find x