Question

ram get 148 marks from 20 qustions .+10 for currect answers and -3 for wrong answer . how many correct answers ?​

Answer 1

Answer:

16

Step-by-step explanation:

let correct answer is x so wrong answer is (20-x)

therefore

x*10 + (20-x)*(-3) = 148

or 10x - 60 + 3x = 148

or 13x = 148 + 60

or 13x = 208

or x = 208/13

or x = 16