Question

Jenny has a 57 3/4 kg bag of dog food. Her dog eats 5 1/4 kg of food each week. How Many Weeks will the bag of dog food last? A.10 3/4 B. 11 weeks C. 18 3/8 D.63 weeks

Answer 1

57 3/4 divided by 5 1/4 =

231/4 divided by 21/4 =

231/4x4/21=231/21=11

Answer 2

B) 11 weeks

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
`=57(3)/(4)\text{kg}`

`(231)/(4)\text{kg}`

dog food eaten by jenny's dog each week
`=5(1)/(4)\text{kg}`

`(21)/(4)\text{kg}`

Number of weeks dog food last
`=\frac{\text{Total dog food}}{\text{Dog food eaten in one week by jenny's dog}}`

`((231)/(4))/((21)/(4))`

`(231)/(21)`

`11`
`\text{weeks}`

the bag of jenny's dog food will last for 11 weeks, therefore option B is correct