Question 985149
The average age of Alice and tom is 14 years 3 months. Alice is 2 years 8 months younger than 
let x=tom's age
2yrs 8 mo=48+8=56
Alice'sage x-56
14 years 3 months=171
x+(x-56)/2=171
x=2*171+56/2=199
Alice'sage x-56=199-56=143