The average of three numbers is 60. The first number is 1/4th of the sum of the others. What is the first number?
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Sum of the numbers 3(60)=180
Let the number be x, y, z
x+y+z=180
x=1/4(y+z)
4x=y+z
x+4x=180
5x=180
x=36
Let the number be x, y, z
x+y+z=180
x=1/4(y+z)
4x=y+z
x+4x=180
5x=180
x=36
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