Question 271627
Rita is twice as old as her cousin Lenny, who is 4 years older than their cousin Tony.  

The sum of all three of their ages is 72.  How old is Rita?

Let  Tony's age x

lenny's age will be x+4

rita'a age will be 2(x+4)

the sum of their ages = 72

x +x+4 +2(x+4) =72

x+x+4 + 2x +8 =72

4x+12=72

4x=72-12
4x=60
x=15  which is Tony's age
Lenny's age will be 15+4 = 19 years
Rita's age = 2*(15+4)= 38 years