Based on the rate of increase for cost of living, your grandmother would receive the amount of $3,048.
The article says that the cost of living increase is 1.6%.
The amount to be received by your grandmother is:
= Monthly social security x ( 1 + increase in cost of living)
= 3,000 x (1 + 1.6%)
= $3,048
In conclusion, your grandmother would receive $3,048.
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