The average expenditure of a labourer for 6 months was 85 and he fell into debt. In the next 4 months by reducing his monthly expenses to 60 he not only cleared off his debt but also saved 30. His monthly income is  Answers:
A) 70
B) 72
C) 75
D) 78
E) None of the above
Income of 6 months = (6 × 85) – debt   = 510 – debt   Income of the man for next 4 months   = 4 × 60 + debt + 30   = 270 + debt   ∴ Income of 10 months = 780   Average monthly income = 780 ÷ 10 = 78   Answer 78
<result>D</result>
The average expenditure of a labourer for 6 months was 85 and he fell into debt. In the next 4 months by reducing his monthly expenses to 60 he not only cleared off his debt but also saved 30. His monthly income is