Question

In atest (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer.(1) radhika answered all the question and scored 30 mark though she got 10 correct answer.(2) jay also answered all the question and scored (-12) marks though he got 4 correct answer. How many incorrect answer had they attempted?

Answer 1

Marks gained by:

Radhika=50

Jay=20

Marks minus for:

Radhika=20

Jay=32(20-(-12)=20+12)

Incorrect answers attempted by:

Radhika=10

Jay=16