Question 356743
let peter's age be x now
chris will be 4x
sara will be4x-6
...
their sum = 66 
x+4x+4x-6 =66
9x-6=66
add 6
9x=66+6
9x=72
x= 8
..
sara = 4x-6 = 32-6 = 26 years
...
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