Question

1/3 cup of flour is used to make 5 dinner rolls.

A)How much flour is needed to make one dinner roll?
B)How many cups of flour are needed to make 3 dozen dinner rolls?
C)How many rolls can you make with 5 2/3 cups of flour?
Sn/Plz leave your answers now!!

Answer 1

A) 1/3 ÷ 5 = 1/3 x 1/5 (the reciprocal of 5) or 1/15 cup to make a single dinner roll
B) 1/15 x 36 (3 dozen) = 36/15 2
`(6)/(15)` cups or 2
`(2)/(5)` cups
C) 5 2/3 ÷ 1/15 = 17/3 x 15/1 = 225/3 = 85 rolls

Answer 2

we know that

`(1)/(3)` cup of flour is used to make
`5` dinner rolls.

Part a) How much flour is needed to make one dinner roll?

by using proportion

`((1)/(3))/(5) =(x)/(1) \\ \\ x=((1)/(3))/(5)\\ \\ x=(1)/(15)`

therefore

the answer Part a) is

To make one dinner roll is needed
`(1)/(15)` cup of flour

Part b) How many cups of flour are needed to make 3 dozen dinner rolls?

Multiply the value obtained in part a) by
`36`

so

`(1)/(15) *36=(36)/(15) \\ \\ =(12)/(5)`

`(12)/(5) =2(2)/(5)`

therefore

the answer Part b) is

To make
`3` dozen dinner rolls are needed
`2(2)/(5)` cup of flour

Part c) How many rolls can you make with 5 2/3 cups of flour?

`5(2)/(3) =(17)/(3)`

by using proportion

`((1)/(3))/(5) =((17)/(3))/(x) \\ \\ (x)/(3) =(85)/(3) \\ \\ x=85`

therefore

the answer part c) is

`85` rolls