Ernie earned $121.50 more than Kaylin. Tria earned $35 less than 3 times the amount Kaylin earned. Ernie, Tria, and Kaylin earned $579 in all. How much did Tria earn?

Question

jhonyy9 · Answer

Ernie earned $121.50 more than Kaylin. Tria earned $35 less than 3 times the amount Kaylin earned. Ernie, Tria, and Kaylin earned $579 in all. How much did Tria earn?

so note what Ernie earned with E 
what Kaylin earned with K 
what Tria earned with T

so Ernie earned $121,50 +K so E = 121 +K
Tria earned 3*K -35  so T = 3*K -35 
E + T + K = 579

using these above wrote can you calcule the correct answers ?

jhonyy9 · Answer

ohh @michaela2006 is offline

so just solve this like a system of equations with 3 variables

jhonyy9 · Answer

E = 121 +K
T = 3K -35
E + T + K = 379

jhonyy9 · Answer

so how you solve this ? any idea ?

jhonyy9 · Answer

so the easyst way to solve is to substitute the first two equations in the 3rd and calcule the value of K

yes ?