For the first 15 questions on a test, 14 questions were answered correctly but only 60% of the remaining questions was correctly answered. 4/5 of the whole test was correct. If each question was awarded of equal value, how many questions was there altogether?

Answer 1

If x more questions were answered correctly, then
14 + 3/5 x = 4/5 (15+x)
find x, and the total is thus x+15