17. Nancy can make 3 cups of croutons from 5 slices of bread. How many cups of croutons can she make from 35 slices of bread?

Answer :

5 slices of bread = 3 cups of croutons

35 slices of bread = ? cups of croutons

cross multiply

[tex]\text{cups of croutons=}\frac{35\times3}{5}=\frac{105}{5}=21[/tex]