Question

refer to the attachment​

Answer 1

Answer:

c) 40

Step-by-step explanation:

case 1. - marks obtained (in %) = 25%

let total marks be = x

let passing marks be = p

let marks obtained be = m

by the given situation

>m= 25% of x

m= 1/4 of x

m= x/4

> p-m = 30

p-x/4= 30

p= 30+x/4--------(1)

case 2 -

by the given situation

> m= 50% of x

m = 1/2 of x

m= x/2

> p +20 = x/2

p= x/2-20---------(2)

(1)=(2)

30+x/4=x/2-20

120+x/4=x-40/2

120+x = 2x-80

x =200 ( total marks)

substitute x value in p

p=30+200/4

p= 80

min passing mark percentage is given by(p%)

=p/m × 100

= 80/200×100

=40

thanks you<3

Answer 2

Answer:

$your \: answer \: is \: 40$

Open and see my answer in your I'd - XxItsShriyaTheGreatXx there is a messagw

Step-by-step explanation:

Explanation is in the attachments.

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