Of the 4 numbers, whose average is 60, the first is one-fourth of the sum of the last three. The first number is?
Pick one
A) 36 B) 40 C) 48 D) 52 E) 56
Let the first number be x   sum of the 4 numbers = x+4x = 5x   5x/4 = 60   x = 60*4/5= 
<gadget id="calculator">60*4/5</gadget>
<output>48</output>
48   Answer is 48
<result>C</result>
Of the 4 numbers, whose average is 60, the first is one-fourth of the sum of the last three. The first number is?