Sorry for not giving you the calculation here -
5/12 and 2/9 have denominators divisible by only 3 right? Well The common denominator that can then change is 3 because that's the only number they have in common (except 1)
1. 900 gallons will be burned in 3 hours.
2. 50 gallons of gasoline weighs 300 pounds.
3. 2,124 = 59 yards
4. The person weighs 48 pounds
5. 12 people = 6 tablespoons
