A man spends 35% of his income on food, 25% on children's education and 80% of the remaining on the house rent. What percentage of his income he is left with?

12%

10%

The man spends 35% of his income on food, leaving:

100% - 35% = 65%

He spends 25% of his income on children's education, leaving:

65% - 25% = 40%

He spends 80% of the remaining (40%) on house rent:

40% x 0.80 = 32%

So, he spends a total of:

35% + 25% + 32% = 92%

This means he is left with:

100% - 92% = 8%

Therefore, the correct answer is: 8%