Average of the height of 286 students of a school is 50 unit. If the average of the height of the boys is 53 unit and the average of the height of the girls is 31 unit, then what will be the ratio of the total height of boys and the total height of girls respectively?
1
1111 ∶ 62
2
1004 ∶ 91
3
530 ∶ 31
4
1007 ∶ 93