Draw a bar model: Stella = 90, Rachel = 340 - 90 = 250.
Total = 340. Equal share each = 170. Rachel gives 250 - 170 = 80.AGS Rule Box
Rachel has=340 - 90 = 250
Equal share each=340 / 2 = 170
Rachel gives=250 - 170 = 80
Final Answer: 80