Question

In a class test ( +4 ) marks are given for a correct answer and ( -2 ) for incorrect answers . A student scored 60 marks and attempted 20 questions correct . Find out how many questions did he answer correctly ....

Pls send the answers in full steps like a word problem .....

Answer 1

hey friend,

here is ur answer..

20*4+-2x=60

80-2x=60

80-60=-2x

20=-2x

=x=20/2

=x=10

final answer , 10 incorrect answers...

Answer 2

Let the number of questions he answered incorrectly be 'x'.

Now,

= > 4 * 20 + (-2) * x = 60

= > 80 - 2x = 60

= > -2x = -20

= > x = 10.

Therefore, the number of questions he answered incorrectly = 10.

Hope this helps!