Question

ketan got 12 marks less than amit and pravin got 6 marks more than amit. if the average of marks of ketan, amit and pravin is 84, how many marks amit got ?

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

let the Mark's obtain by amit = x

then Marks obtain by ketan = x-12

then Marks obtain by pravin = x+6

A/q:-

$\frac{x + x - 12 + x + 6}{3} = 84 \\ \frac{3x - 6}{3} = 84 \\ 3x - 6 = 84 \times 3 \\ \\ 3x = 252 + 6 \\ x = \frac{258}{3} \\ x = 86$

Amit's Marks =x=86

ketan's Marks =86-12=74

pravin's Marks =86+6=92

I hope it will help you.