Answer :
Jane has read 108 pages, which leaves 92 pages to read (200 - 108). That is 92/200, which simplifies to 46/100 = 46%. Kevin has 80 pages left, which is 80/200, which simplifies to 40/100 = 40%. Therefore, Jane has got to read 6% more pages, which however is not on here. This could be a mistake in the question.