Question

For holidays,Mrs.Reily wants to make 3 batches of chocolate crinkle cookies. Each batch requires 2 cups of sugar. If Mrs.Reilly only has 3 and 4/5 cups of sugar, how many more cups of sugar does Mrs.Reilly need

Answer 1

The number of the more cups of sugar is 2
`(1)/(5)` cups

Explanation:

Let us solve it step by step

∵ Mrs.Reily wants to make 3 batches of chocolate crinkle cookies

∵ Each batch requires 2 cups of sugar

→ Multiply 2 by 3 to find the number of cups of sugar she will

need to make 3 batches

∴ The total number of cups of sugar = 2 × 3 = 6 cups

∴ She will need 6 cups of sugar to make 3 batches

∵ Mrs.Reilly only has 3 and 4/5 cups of sugar

→ Subtract it from the total number of cups of sugar

∴ The number of the more cups = 6 -
`3(4)/(5)`

→ Change 3
`(4)/(5)` to an improper

∵
`3(4)/(5)` = (3 × 5 + 4)/5

∴
`3(4)/(5)` =
`(19)/(5)`

∴ The number of the more cups = 6 -
`(19)/(5)`

→ Make 6 as a fraction by multiplying up and down by 5

∴ The number of the more cups =
`(30)/(5)` -
`(19)/(5)`

∴ The number of the more cups =
`(11)/(5)`

→ Chang it to a mixed number

∵ 11 ÷ 5 = 2 R 1

∴
`(11)/(5)=2 + (1)/(5)`

∴ The number of the more cups of sugar = 2
`(1)/(5)` cups