Rainfall & weeds year rainfall (cm) sweet pea /m2 chicory /m2 1980 115.5 56 47 1981 106.7 58 48 1982 71.4 28 56 1983 88 31 62 1984 127.5 79 29 the table shows the average population of two competing weeds over a square meter of ground in a georgia field. the table also gives the average rainfall for five successive years. what percentage of the weeds growing in 1984 were chicory? a) 27 b) 29 c) 37 d) 79

When calculating percentage we need two numbers. one number represents total amount of certain thing and another number represents partial number of that thing. then we divide those two numbers.in this problem total amount represents total number of weeds growing on some surface. partial number represents chicory.percentage = partial / total * 100%percentage = 29 / 98 * 100%percentage = 29.6%our calculation is closest to answer b) so this is our correct answer.