Question

betrice decided to sell some of her dolls in her doll colection. she sold 20 dolls. this way 40% of her collection. how many dolls did she have left?

Answer 1

40%/100%

For every 20 dolls its 40%


40+40= 80%, and you need 20% more to get 100%. Half of 40% is 20%, and half of 20 dolls is 10.




10 dolls =20%


80% + 20%= 100%




40 + 10 = 50




50 dolls=100%


But since she sold 20 dolls already...


50-20= 30


This means she had 30 dolls left to sell.