The average height of a group of boys and girls is 72 cm. The average height of boys is 76 cm and that of girls is 70 cm. If the number of boys is 17, what is the number of girls?
1
17
2
46
3
34
4
52
The average height of a group of boys and girls is 72 cm. The average height of boys is 76 cm and that of girls is 70 cm. If the number of boys is 17, what is the number of girls?