Kanul spent $80000 in buying raw materials, $30000 in buying machinery and 20% of the total amount he had as cash with him. What was the total amount?
Choose one:  A) $ 135656  B) $ 137500  C) $ 134446  D) $ 123265  E) $ 124564

Rationale: "let the total amount be x then , ( 100 - 20 ) % of x = 80000 + 30000 80 % of x = 110000 80 x / 100 = 110000 x = $ 1100000 / 8 x = $ 137500 answer is b"
Answer: B