The average height of a group of 8 girls is 134 cm. When Esther and Raeann joined the group, the average height increased by 6 cm. What is Esther and Raeann's total height?
| |
8 girls |
10 girls |
| Number |
8 |
10 |
| Value |
134 |
140 |
| Total value |
1072 |
1400 |
Total number of girls after 2 more girls joined the group
= 8 + 2
= 10
New average height after 2 more girls joined the group
= 134 + 6
= 140 cm
Total height of 8 girls
= 8 x 134
= 1072 cm
Total height of 10 girls
= 10 x 140
= 1400 cm
Total height of Esther and Raeann
= 1400 - 1072
= 328 cm
Answer(s): 328 cm
