Answer:
3rd answer is correct
Step-by-step explanation:
- Total liters of oil that Hannah has : 4 l
- Amount of liters she has used : 1 1/2
- Amount of oil that is left in the bottle :
[tex] \text{oil \: left \:in \: the \: bottle = total \: amount \: of \: oil \: - \: amout \: of \: oil \: alreday \: used } \\ \text{oil \: left \:in \: the \: bottle = } {4 - 1 \frac{1}{2} } \\ \text{oil \: left \:in \: the \: bottle = } 4 - \frac{3}{2} \\ \text{oil \: left \:in \: the \: bottle = } \frac{4 \times 2}{1 \times 2} - \frac{3}{2} \\ \text{oil \: left \:in \: the \: bottle = } \frac{8}{2} - \frac{3}{2} \\ \text{oil \: left \:in \: the \: bottle = } \frac{5}{2} \\ \text{oil \: left \:in \: the \: bottle = }2\frac{1}{2} [/tex]
