The average of r and s is 7.5, and the average of r, s and t is 11. What is the value of t?

p, q, r, s, t, are five numbers such that the average of p,q and r is 5 and that of s and t is 10. What is the average of all the five numbers ?

If 2r=s and 24t=3s , what is the r in terms of t?

Intersecting lines r,s and t are shown below. What is the value of x?

f(x)=3x^(3)-5x^(2)-48x+80 If the zeros of function f defined above are represented by r, s, and t, what is the value of the sum r+s+t ?

The average weight of three boys P, Q and R is 54 kg, while the average weight of three boys Q, S and T is 60 kg. What is the average weight of P, Q, R, S and T?

Average weight of three boys P,T and R is 54 (1)/(3) kg. while the average weights of three boys T , F and G is 53 kg . What is the average weight of P,T,R,F and G ?

The average age of r boys in a class is a years. If the average age of s of them is b years, them what is the average age of the remaining boys ?