Answer:
B) 11 weeks
Step-by-step explanation:
Given: Jenny has a 57 3/4 kg bag of dog food. Her dog eats 5 1/4 kg of food each week
To Find: How Many Weeks will the bag of dog food last
Solution:
quantity of dog food jenny has [tex]=57\frac{3}{4}\text{kg}[/tex]
[tex]\frac{231}{4}\text{kg}[/tex]
dog food eaten by jenny's dog each week [tex]=5\frac{1}{4}\text{kg}[/tex]
[tex]\frac{21}{4}\text{kg}[/tex]
Number of weeks dog food last [tex]=\frac{\text{Total dog food}}{\text{Dog food eaten in one week by jenny's dog}}[/tex]
[tex]\frac{\frac{231}{4}}{\frac{21}{4}}[/tex]
[tex]\frac{231}{21}[/tex]
[tex]11[/tex] [tex]\text{weeks}[/tex]
the bag of jenny's dog food will last for 11 weeks, therefore option B is correct
