Question

mina scored a 75 marks in english qnd 80 marks in hindi how many marks should she score in mathematics to make a total of 250

i need step by step explanation​

Answer 1

Answer:

Let the marks in Math be x and in English (30−x).

New marks in Math =2+x

New marks in English =27−x

(2+x)(27−x)=210

54−2x+27x−x

2

=210

x

2

−25x+156=0

x

2

−12x−13x+156=0

x(x−12)−13(x−12)=0

(x−12)(x−13)=0

x=12,13

If her marks in Math is 12, then in English she got 18.

If math mark is 13, then she got 17 in English.

Answer 2

Answer:

let the marks she scored in maths be x

marks scored in english=75

marks scored in hindi=80

total marks=250

Now,

75+80+x=250

155+x=250

x=250-155

x=95

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