Question

plz tell how to solve after this
I am struck

Answer 1

Here is your answer.

Answer 2

●•••••••• Hello Sowmiya ••••••••●
《《 Here is your answer 》》
__________________________

let , the total no. of correct answer be x
and total no. of wrong answer be y

then ,
x + y = 120 .....(1)

and . total marks she scores is 90
then ,

(1)x - (1/2)y = 90 ....... (2)

Now , subtracting eq. (1) & (2) ,

(x + y = 120 )
- (x - y/2= 90)
--------------------
y + y/2 = 120 - 90
3y/2 = 30
y/2 = 10
y = 20

Now , from eq. (1)

x + y = 120
x + 20 = 120
x = 120 - 20
x = 100

:. Total no. of correct answer x = 100
& Total no. of wrong answer y = 20

___________________________
《 Hope it may helpful to you 》

●••••••• ☆ Brainly Star ☆ •••••••●