In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer. i.Radhika answered

Question

3 years ago

15

In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer. i.Radhika answered

all the questions and scored 30 marks and get 10 correct answers. ii.Jay also answered all the questions and scored (-12) marks though he got 4 correct answers. How many incorrect answers had they attempted?

Mathematics

1 answer:

Mumz [18] · Answer 1 · 2022-02-19T05:57:42+03:00

Mumz [18]3 years ago

7 0

Step-by-step explanation:

number of correct answer is x and

number of wrong answer is y

according to question

In the case of Radhika

5x-2y=30

x=10

y=10

In the case of Jay

5x-2y=-12

x=4

y=16

incorrect answer by Radhika is 10 and by jay is 16