Question

please answer my question 7th class ​

Answer 1

Answer:

30 questionss

Step-by-step explanation:

let the number of correct ans be x and the no of wrong answers be y

radhika s score in a equation would be

5x - 2y =30

also we know tht she got 10 quetsions right

therefore substituting x as 10 in the above equation we get

5(10)-2y=30

50-2y=30

2y=20

y=10

therefore the total no of questions are 30 (20 +10)