The table shows the number of candidates recruited by four companies A, B, C and D over the years. Find the ratio of number of candidates recruited by company B in 2019 to the ratio of candidates recruited by company D in 2020. Years A B C D 2018 55 40 25 15 2019 60 75 50 25 2020 65 30 40 65 2021 45 35 70 35

15 : 13 13 : 12 15 : 11 12 : 11

15 : 13

The number of candidates recruited by company B in 2019 = 75 The number of candidates recruited by company D in 2020 = 65 The ratio = 75 : 65 = 15 : 13