Question

kim has 18 toys.1/3 of the toys are teddy bears.1/6 of the toys are balls and the rest are dolls.How many dolls does Kim have

Answer 1

D represents dolls

1/3×18+1/6×18+d=18

18/3+18/6+d=18

6+3+d=18
9+d=18

d=18-9
d=9