In a maths competition each correct answer gets three marks, but one mark is deducted for each incorrect answer.

2 answers:

8 0

I think 20
there are 90 possible marks. since she got 30, i divided 30/90. which resulted in 0.333333. i think multiplied that by 30 to get the number of correct answers which was 10, leaving 20 incorrect

Andreyy893 years ago

4 0

Answer:

Step-by-step explanation:

Because there was 30 question, and she got 30 marks

30 - 30 = 0

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