Of three numbers, the first is 4 times the second and 3

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Of three numbers, the first is 4 times the second and 3 times the third. If the average of all the three numbers is 95, what is the third number ?

Let the third number be p,
∴ First number = 3p

∴ Second number =	3p
	4

According to the question, 3p +	3p	+ p = 3 × 95
	4

⇒	12p + 3p + 4p	= 285
	4

⇒ 19p = 285 × 4

⇒	285 × 4	= 60
	19

Aliter : Using Rule 15,

Here, a = 4, b =	3	, X = 95
	4

Third Number =	3	X
	1 + b + ab

Third Number =	3 × 4	× 95 = 60
	4 + 3 + 12