Question

camila had a large collection of basketball cards. she gave half of them to her friend erin and a sixth of them to her brother. she still has has 150 cards left. how many cards did she start with? show all your work.

Answer 1

i wrote somethig wrong the answer is360

Answer 2

suppose she had x basketballso
she gave erin=half of x
=1/2x
now she has x-1/2x basketballso
then she gave her brother =1/6 (x-1/2x)
=1/6×x/2
=x/12
now x-(1/2x+x/12)=150(solving the equation)
= 5x/12=150
=x=360
all basketballs=360