Question

In a test +5 marks are given for every correct answer.-2 marks are given for every incorrect answer.a)Radhika answered all the questions and scored 30 marks though she get 10 correct answers.How many incorrect answers had she attempted?

Answer 1

Answer:

Your answer is 10.

Step-by-step explanation:

Radhika got 30marks.

and she answered 10 questions.

Each correct answer get 5marks.

So, Radhika got 10×5=50 marks.

But she got 30 marks.

So, 50-30=20.

Each incorrect answer carries -2 marks.

So 20/2=10.