Respuesta :

Kellan uses 2.5:5 for 7.5 scoops lemonade combined

15/7.5 = 2, so multiply that by the ratio so 2.5(2):5(2) = 5: 10


10 scoops lemonade powder and 5 scoops of water

It's easy if you think of this way.

For every 5 scoops of lemonade powder, is 2.5 cups of water. If we did 10 scoops of lemonade powder, it would be 5 cups of water. If we did 15, it would be 7.5 cups of water.