Answer:
In 20 days he will waste 20 * 1/2 = 10 rotis . They have consumed 110 rotis in 20 days , so they have taken 110 + 10 = 120 rotis. (10 are wasted). Rosa ate x rotis and Varun ate 2x rotis . So x + 2x = 120 ⇒ 3x = 120 ⇒ x = 120/3 ⇒ x = 40
Varun ate 80 (2x) and Rosa ate 40 (x)
Explanation: