Answer:
1.75×10^12years
Explanation:
In one second, 1.5 million tons (1.5×10^6 tons = 1.5×10^6 × 1000kg = 1.5×10^9kg) of sun is carried away by solar wind
Mass of the sun = 1.989×10^30kg
Time for all of the sun's mass to escape = 1.989×10^30/1.5×10^9 × 1 sec = 1.326×10^21 sec × 1 year/7.57×10^8 sec = 1.75×10^12 years