The picnic committee bought 30 liters of lemonade. there were 4 liters left over. how many gallons of lemonade were used at the picnic

30 liters bought ... 4 liters left-over ... 30 - 4 = 26 liters used

1 liter = 0.264172 gallons ... so 26 liters is 26 * 0.264172 = 6.868472 gallons ... rounded would be 6.9 gallons or if u need it rounded to the nearest gallon, it would be 7 gallons