on the first day of P5 camp, the ratio of the number of pupils in Group A to that in Group B was 5 : 8. On the second day,153 pupils were transferred from Group A to Group B and the ratio became 1 : 5. How many pupils were there in Group B at first?
on the first day of P5 camp, the ratio of the number of pupils in Group A to that in Group B was 5 : 8. On the second day,153 pupils were transferred from Group A to Group B and the ratio became 1 : 5. How many pupils were there in Group B at first?