Mathematics · Data Interpretation

Study the given table and answer the question that follows. The table shows the number of students studying in six different classes of six different schools: School Class V Class VI Class VII Class VIII Class IX Class X P 152 160 145 156 147 144 Q 148 166 150 155 157 143 R 161 152 140 145 143 165 S 159 142 149 140 142 168 T 147 144 158 163 154 150 U 150 160 162 160 161 140 Total 917 924 904 919 904 910 What is the respective ratio of students studying in class IX of schools Q and R together to those studying in class VI of schools S and T together?