Question

Amita was given test in Mathematics by a tutor the square of the actual marks scored by was nine times the marks reported by the parents if the actual marks scored by 10 less than the score reported by her to the parents then find the actual score of Amita

Answer 1

Answer:

10

Step-by-step explanation:

Let actual marks be x then reported will be 10 extra or x+ 10 .

Now first condition

${x}^{2} = 9(x + 10) \\ {x}^{2} - 9x - 10 = 0 \\ (x - 10)(x + 1) = 0 \\ x = 10$