Marks	10 - 19	20 - 29	30 - 39	40 - 49	50 - 59	60 - 69	70 - 79	80 - 89	90 - 99
Frequency	2	2	2	8	13	11	12	10	4

The table shows the distribution of marks scored by 64 students in a test

(a) Draw a histogram for the distribution.

(b) Use the histogram to estimate the modal score.