Scarlet has $85 to spend at the pet store. she is definitely buying a catfish for $12, a rainbowfish for $13, and a betta fish for $14. scarlet wants to use whatever money she has left to buy some hermit crabs, which cost $8 each. there is no tax on any of her purchases.

Subtract the total of the 3 fish she is buying from the amount of money she has:

85 - (12 + 13 + 14) = 85 - 39 = 46

She has $46 to spend on crabs.

Divide the amount she has to spend by the price on one crab:

46 / 8 = 5.75

Since it isn't a whole number you need to round down, since she cant buy 0.75 of a crab.

She has enough money to buy 5 crabs.