Answer: Emma is 8, Charlotte is 13, and Sandy is 26. 26 + 13 + 8 = 47
Step-by-step explanation:
First you need to figure out Emma's age. I did this by writing it out as such:
Emma + (Emma +5) + 2x (Emma +5) = 47
(Emma) (Charlotte) (Sandy)
Then I grouped similar things:
4x (Emma) + 15 = 47
Subtract 15 from both sides:
4x (Emma) = 32
Divide both sides by 4:
Emma = 8
To find Charlotte's age:
8 + 5 = 13
To find Sandy's age:
13 x 2 = 26
Check:
26 + 13 + 8 =47
