Melanie’s monthly pay is $5553.60. each month she uses 2/3 of her pay for household expenses and 1/10 for donations. she deposits the rest into her savings account.
how much does melanie deposit into her savings account each month?

You have to find how much of 5553.60 is 2/3 and 1/10.

2/3 of 5553.60 = 3702.40
(5553.60/3 = 1851.20
1851.20 * 2 = 3702.40)

1/10 of 5553.60 = 555.36
( 5553.60 / 10 = 555.36)

555.36 + 3702.40 = 4257.76

To figure out how much goes into the savings account you have to subtract the total of her other expense from the total amount.

5553.60 - 4257.76 = 1295.84

$1295.84
That's your answer