Respuesta :
Answer:
They found 15 shells
Step-by-step explanation:
First, multiply. 5 × 2 = 10
Then, add. 5 + 10 = 15
Lastly, have a great day!
15 seashells Jane has 5 ruby has twice as many so 5 x 2 = 10 put them together to get 10+5=15