Answer:
the number is -1/3
Step-by-step explanation:
The given statement can be written in math terms as ...
(1/5)(n -3) = 2n . . . the problem statement, using n to represent the number
n -3 = 10n . . . . . . . . . multiply by 5
-3 = 9n . . . . . . . . . . . subtract n
-1/3 = n . . . . . . . . . . . divide by 9 and reduce the fraction
The number is -1/3.
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Check
-1/3 -3 = -3 1/3 = -10/3
1/5 of -10/3 = -2/3
-2/3 is twice the number -1/3 . . . . . answer checks OK
