Ramu gained how much by selling his product in June 2017?
I. He earned 40% more profit in July 2017 as compared to May 2017.
II. In June 2017 he earned 10% more profit than in July 2017.
III. The profit earned in May 2017 is Rs 1,750.
From I May 2017100 July 2017140 From II July 2017140 June 2017154 From III 100 ≡ 1750 ∴ 154 ≡ 1750/100×154 = Rs 2695 Hence all the statements are necessary to find the answer.