
Kindly help to solve the above question by using model method. Thank you.
Kindly help to solve the above question by using model method. Thank you.
Danny [u][u][u][u]
Ethan [u][u][u]
Caleb [837-7u]
After Danny and Caleb spent 1/3 of their money, $648 is left
(1/3)(4u) + (1/3)(837-7u) = 837-648 = 189 ( x 3 on both sides)
4u + 837 – 7u = 567
3u = 270
u =90
Hence at first Caleb has 837-7(90) = $207
Caleb and Danny spent 837 - 648 = 189. That is 1/3 of their money. So Caleb and Danny had 3 x 189 = 567 altogether. Thus Ethan had 837 - 567 = 270. But Danny:Ethan = 4:3, so that means Danny had 4 x 270/3 = 360. Answer: Caleb had 837 - 270 - 360 = $207 at first.