Jacob wants his aquarium area to have 18fish. Each tank has 3 fish. His father gave him 2 fish tank and his mother gave him 3 fish tanks as a gift. how many more fish tanks does he need to fill the aquarium area?
one more fish tank,.. because 3+2=5.......and 3 fish in each tank so 5×3=15.......18-15=3........so he had 3 fish left over........which would fit in exactly 1 more fish tank.
