<h2>Solution (a) :-</h2>
Quantity of flour needed to make 20 pancakes =
![= 1 \frac{2}{3} \:](https://tex.z-dn.net/?f=%20%3D%201%20%5Cfrac%7B2%7D%7B3%7D%20%20%5C%3A%20)
![= \frac{3 \times 1 + 2}{3}](https://tex.z-dn.net/?f=%20%3D%20%20%5Cfrac%7B3%20%20%5Ctimes%201%20%2B%202%7D%7B3%7D%20)
![= \frac{5}{3} \: cups \: of \: flour](https://tex.z-dn.net/?f=%20%3D%20%20%5Cfrac%7B5%7D%7B3%7D%20%20%5C%3A%20cups%20%5C%3A%20of%20%5C%3A%20flour)
Then , number of pancakes that can be made from 1 cup of floor :-
![20 \div \frac{5}{3}](https://tex.z-dn.net/?f=20%20%5Cdiv%20%20%5Cfrac%7B5%7D%7B3%7D%20)
![20 \times \frac{3}{5}](https://tex.z-dn.net/?f=20%20%5Ctimes%20%20%5Cfrac%7B3%7D%7B5%7D%20)
![\frac{60}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B60%7D%7B5%7D%20)
.
Therefore , 12 pancakes can be made from 1 cup of floor .
<h2>Solution (b) :-</h2>
Number of pancakes that can be made with 1 cup of flour = 12 pancakes
Number of pancakes that can be made with 9 cups of flour :-
= 9 × 12
= 108 pancakes
Therefore , I can make 108 pancakes with 9 cups of flour .
<h2>Solution (c) :-</h2>
Yes , I have enough flour to make 100 pancakes . I say this because :-
With one cup of flour I can make = 12 pancakes
With 9 cups of flour I can make =
= 9 × 12
= 108 pancakes
As I can make 108 pancakes with 9 cups of flour , I can conclude that I have enough flour to make 100 pancakes .