Miss Huangs monthly salary is $1650. She spends 2 5 of it, give 1 3 of the remainder to her mother and saves the rest. How long will she take to save $5940?

From her monthly salary of $1650, Miss Huang spends 2/5 * 1650 = $<<2/5*1650=660>>660

After spending, she remains with 1650 - 660 = $<<1650-660=990>>990
Out of the remainder, she gives her mother 1/3 * 990 = $<<1/3*990=330>>330
The amount of money Miss Huang saves is 990 - 330 = $<<990-330=660>>660
If she saves $660 a month, it will take her 5940/660 = <<5940/660=9>>9 months to save $5940. Answer: \boxed{9}.

To find out how long it will take for Miss Huang to save $5940, we need to determine the amount she saves each month.

First, let's calculate the amount Miss Huang spends each month:
2/5 * $1650 = $660

Now, let's calculate the remainder after spending:
$1650 - $660 = $990

Next, let's calculate the amount she gives to her mother:
1/3 * $990 = $330

Finally, let's calculate the amount she saves each month:
$990 - $330 = $660

Since Miss Huang saves $660 each month, we can calculate the time it takes for her to save $5940:
$5940 / $660 = 9 months

Therefore, Miss Huang will take 9 months to save $5940.

To find out how long it will take for Miss Huang to save $5940, we need to first calculate the amount she saves each month.

Miss Huang spends 2/5 of her monthly salary, which means she saves 1 - 2/5 = 3/5 of her monthly salary.
If her monthly salary is $1650, then she saves (3/5) * $1650 = $990 each month.

Now, let's determine the number of months it will take to save $5940.
If $990 is saved each month, the number of months needed to save $5940 is $5940 / $990 = 6 months.

Therefore, Miss Huang will take 6 months to save $5940.