There were a total of 72 questions in a school Science test. 8 marks were awarded for each correct answer and 6 marks were deducted for each incorrect answer or incomplete answer. Fiona could not complete all the questions in time and left the last 19 questions blank. She scored 100 marks. How many less wrong or incomplete answers than correct answers did she answer?

Correct answers	Marks awarded (x8)	Wrong or incomplete answers	Marks deducted (x6)	Difference
53	424	19	114	310
52	416	20	120	296

Number of questions completed
= 72 - 19
= 53

Big difference
= 310 - 100
= 210

Small Difference
= 310 - 296
= 14

Number of wrong answers
= 210 ÷ 14
= 15

Number of wrong and incomplete answers
= 15 + 19
= 34

Number of correct answers
= 72 - 34
= 38

Number of less wrong or incomplete answers than correct answers
= 38 - 34
= 4

Answer(s): 4