Question

please solve this equations. q.no.18 or 19

Answer 1

18. Let the lowest score be x
Highest score=2x+6(given)
Highest score=96(given)
lowest score⇒2x+6=96⇔2x=90-6
2x=90
⇔x=90/2
x=45
∴lowest marks=45 marks.
19. Let sheela age be x
Then her mother's age is (x+4)×2
And her brother age is x+2/3
Now we know the sheela age is 13
So her mother's age is (13+4)×2=17×2=34
And her brother age is 13+2/3=15/3=5
So Sheela is 13 years
Her mom is 34 years
Her brother is 5 years
Please mark as brainliest now.

Answer 2

18) let we take the lowest score as -x
then the highest score -2x+6
ATQ-highest score - 96
Then, 2x +6=96
2x=96-6=90
x=90÷2=45
so,the lowest score is 45

19)sorry can't do this