Question

of the three numbers the first us twice the second and the second is twice the third number the average of three number is 21 find the greatest number​

Answer 1

Answer:

Let Number be x

x + 2x + 4x

$\frac{x + 2x + 4x}{3} = \frac{7x}{3} = 21$

$7x = 21 \times 3 = 63 \\ x = 63 \div 7 = 9$

largest number =

$9 \times 4 = 36$

Therefore 36 is greatest number. Hope it helps.