Study the given information carefully and answer the questions given below. Nine people P, Q, R, S, T, U, V, W and X were born in different years i.e....

Study the given information carefully and answer the questions given below.
Nine people P, Q, R, S, T, U, V, W and X were born in different years i.e., 1998, 2000, 2003, 2004, 2005, 2010,
2012, 2015 and 2017 on the same date i.e., 31st December but not necessarily in the same order. Their
ages are calculated as of 31st December 2021.
Q is one year younger than T and one year older than V. P was born one of the years before R. U is older
than W. The number of people born before P is same as the number of people born after U. X was born
before U but one of the years after S. Present age of R is not a prime number.

What is the sum of the present ages of S and W?