Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between theÂ first and the third number?

Among three numbers, the first is twice the second and thrice the thir

1.	Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between theÂ first and the third number?
A.	412
B.	468
C.	517
D.	427
Answer» C. 517