Lena has painted 3/4 of a room.

She has used 1 1/2 gallons of

paint. How much paint will

she need for the whole room?

She will need 2 gallons for the whole room, 1/2 gallon for the remaining 1/4 of the room.

2 gallons

Step-by-step explanation:

she painted 3/4 of the room already and that took 6/4 to do if you do improper fraction and a common denominator. so it is taking her double the numerator so to paint 4/4 of the room or 1 whole room it would take 2 gallons. I hope this makes sense.