Sammy and David were selling water bottles to raise money for new football uniforms.Sammy sold 5 water bottles for every 3 water bottles David sold.Together they sold 160 water bottles.How many did each boy sell?

Respuesta :

ratio 5: 3....added = 8

5/8(160) = 800/8 = 100 <==  Sammy sold 100
3/8(160) = 480/8 = 60 <== David sold 60
5+3=8
160/8=20
20x3=60
20x5=100
Sammy : 100
David : 60