Question

in a class test (+5) Mark's a are given for every correct answer and(-2) marks are given for every incorrect answer
a. Radhika answered all the questions and scored 30 marks and get 10 correct answer?​

Answer 1

Answer:10

Step-by-step explanation:

Marks given for one correct answer = 5

So, marks given for 10 correct answers  

= 5 X 10 = 50

Radhika's score = 30

Marks obtained for incorrect answer

= 30- 50 = -20

Marks given for one incorrect answer  

= (-2)

Therefore, number of incorrect answers

= (−20)÷(−2)=10

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Answer 2

radhika marks 30 out of 50 because she correct 10 answers so the total test marks is 50