Of the three numbers, the first is twice the second and the second is twice the third. The average of the reciprocal of the numbers is $\frac{7}{72} .$ The numbers are
Of the three numbers, the first is twice the second and the second is twice the third. The average of the reciprocal of the numbers is $\frac{7}{72} .$ The numbers are
- A
$16,\,8,\,4$
- B
$20,\,10,\,5$
- C
$24,\,12,\,6$
- D
$36,\,18,\,9$
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