lex had 144 coins left after giving one-third of his coins to Clark and one-third of his remaining coins to Lois. How my coins dad he give Lois

CDorrell Jan 18, 2019

#1**+1 **

Let the number of coins that he started with= C

2/3C left - after he gave 1/3 to Clark

4/9C left - after he gave 1/3 to Lois

4/9C = 144, solve for C

C =144 x 9/4 =324 - Coins that Lex started with.

324 x 1/3 =108 Coins he gave to Clark

324 - 108 =216 Coins left

**216 x 1/3 =72 Coins he gave to Lois.**

216 -72=144 - Coins that he is left with.

Guest Jan 18, 2019

#2**+1 **

Let N be what he started with

After he gave1/3 of his coins to Clark and 1/3 of the remaining coins to Lois we have

After giving (1/3) to Clark, he had (2/3)N left

After giving (1/3) of these to Lois, we have

(2/3)[(2/3)N] = 144

(4/9) N = 144

N = 144 * 9 / 4 = 324

After giving (1/3) of these to Clark he had 216 left

He gave (1/3) of these to Lois = 216 / 3 = 72

CPhill Jan 18, 2019