Question

the total hours allotted for writing and oral competition is 2 and 3 / 5 hours. the writing competition is allotted 1 and 5/6 hours. how many hours are allotted for the oral competition

Answer 1

2 3/5 = 1 5/6 + x
x = 2 3/5 - 1 5/6 = 23/30 hours he spent on oral competition