225 grams of flour are needed to make 9 cakes. Marian wants to make 20 of these cakes. She has 475 grams of flour. Does Marian have enough flour to make 20 cakes?

1 Answer
Feb 6, 2017

Marian does not have enough flour to make #20# cakes and she needs #25# grams of flour more.

Explanation:

As #225# grams of flour are needed to make #9# cakes,

for #1# cake one needs #225/9=25# grams of flour.

But, Marian wants to make #20# such cakes and

for this she will need #20xx25=500# grams of flour.

As she has only 475 grams of flour,

Marian does not have enough flour to make #20# cakes

and she needs #500-475=25# grams of flour more.