The average height of a group of 6 girls is 149 cm. When Kimberly and Jade joined the group, the average height increased by 7 cm. What is Kimberly and Jade's total height?
| |
6 girls |
8 girls |
| Number |
6 |
8 |
| Value |
149 |
156 |
| Total value |
894 |
1248 |
Total number of girls after 2 more girls joined the group
= 6 + 2
= 8
New average height after 2 more girls joined the group
= 149 + 7
= 156 cm
Total height of 6 girls
= 6 x 149
= 894 cm
Total height of 8 girls
= 8 x 156
= 1248 cm
Total height of Kimberly and Jade
= 1248 - 894
= 354 cm
Answer(s): 354 cm
