Suresh and Ramesh are twins. In a form by mistake, Suresh reverses the last 2 digits of his year of birth, and this makes him 9 years older than Ramesh. With this mistake, the sum of their ages in 2015 becomes 43. How old will Ramesh be 2021?
a) 17
b) 19
c) 21
d) 23
e) 25
a) 17
b) 19
c) 21
d) 23
e) 25