Question 1117671

Amy, Chau, and Juan have a total of {{{90}}}:

{{{Amy+ Chau+Juan=90}}}....eq.1


if Amy has {{{5}}} {{{more}}} than Chau, we have

{{{Amy=Chau+5}}}=>{{{Chau=Amy-5}}}...eq.2

if Juan has {{{3}}} {{{times}}} what Amy has, we have

{{{Juan= 3*Amy}}}...eq.3


{{{Amy+ Chau+Juan=90}}}....eq.1 substitute values rom eq.2 and eq.3

{{{Amy+ Amy-5+3*Amy=90}}}

{{{5*Amy=90+5}}}

{{{Amy=95/5}}}

{{{Amy= 19}}}

{{{Chau=Amy-5}}}=>{{{Chau=19-5}}}=>{{{Chau=14}}}

{{{Juan= 3*Amy}}}=>{{{Juan= 3*19}}}=>{{{Juan= 57}}}


 How much do they have in their wallets? 

{{{Amy}}} has {{{19}}}

{{{Chau}}} has {{{14}}}

{{{Juan}}} has {{{57}}}