Question

Katrian needs 3/5 kilograms of flour for a recipe.Her mother has 3/7 kilograms of flour in her pantry. Is this enough flour for the recipe?If not,how much will she need.

Answer 1

Mass of present flour is less than the flour needed.

6/35 kilograms of flour is needed.

Explanation:

Mass of flour required =
`(3)/(5) kg`

Mass of flour present =
`(3)/(7) kg`

`(3* 7)/(5* 7) kg,(3* 5)/(7* 5) kg`

`(21)/(35) kg,(15)/(35) kg`

`(21)/(35) kg>(15)/(35) kg`

Mass of present flour present is less than the flour needed.

Amount of flour needed :

`(3)/(5) kg-(3)/(7) kg`

`(3* 7)/(5* 7) kg-(3* 5)/(7* 5) kg`

`(21)/(35) kg-(15)/(35) kg`

`(21)/(35) kg-(15)/(35) kg=(6)/(35) kg`

6/35 kilograms of flour is needed.