Question

10. (a) In a test (+5) marks are given for every correct answer and (-2) marks
are given for every incorrect answers.
(1) Satwika answered all the questions and scored 30 marks through 10
correct answers.
(ii) Neeraja also answered all the questions and scored (-12) marks
through 4 correct answers.
How many incorrect answers did each of them answer?
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Answer 1

Answer:

satwika answers 10 incorrect answers and neeraja answer 16 incorrect answers

Step-by-step explanation:

(1)satwika answers 10 correct so she scored 10*5=50 and there is 30 marks she scored total so the marks she got in incorrect answers is 50-30=20 and marks for incorrect answers is (-2) so dividing 20 by 2 is equal to 10.

(2)where same neeraja answers 4 correct so she scored 4*5=20 and there is (-12) marks she scored total so the marks she got in incorrect answers is 20-(-12)=32 and marks for incorrect answers is (-2)so dividing 32 by 2 is equal to 16.