Question

5.1 in a test, +3 marks are given for every correct answer and -1 mark is given for every incorrect answer.
Sona attempted all questions and got 10 answers correct. But her total score was only +20
(a) How many incorrect answers did she give?
(b) How many questions were given in the test?
Answer as soon as possible please.​

Answer 1

Answer:

hey here is your answer

pls mark it as brainliest

so here we go

Step-by-step explanation:

let the marks for every correct answer be x and that of every incorrect be y

so according to first condition

3x-y=20 (1)

according to second condition,

now here x=10 (2)

substitute x ka value in (1)

we get

(3×10)-y=20

thus 30-20=y

hence y=10

thus she gave 10 answers incorrect

so total questions asked=total correct answers+total incorrect

=10+10

=20

hence total questions asked in exam were 20 questions