Out of 4 numbers, whose average is 60, the first one is

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Out of 4 numbers, whose average is 60, the first one is onefourth of the sum of the last three. The first number is

1. 15
2. 45
3. 48
4. 60

Correct Option: C

Let the first number be p,

then, p =	240 - x	= 48
	4

⇒ 4p = 240 – p
⇒ 5p = 240
⇒ p = 240 ÷ 5 = 48