Question

Helena needs 3.5 cups of flour per loaf of bread and 2.5 cups of flour per batch of muffins. She also needs 0.75 cup of sugar per loaf of bread and 0.75 cup of sugar per batch of muffins. Helena has 17 cups of flour and 4.5 cups of sugar available for baking.

Which combination of loaves of bread and batches of muffins could Helena bake?

Answer 1

Given the choices, the best fitting answer would be the first one. "2 loaves of bread and 4 batches of muffins". I figured this out by multiplying the amount of flour and sugar required for each loaf of bread and batch of muffins

Answer 2

Helen can make 2 loaves of bread and 4 batches of muffins.

Explanation:

Let x be the number of loaves of bread

Let y be the number of batches of muffins

As per the given requirement of flour, the equation becomes:

`3.5x+2.5y=17` .......(1)

As per the given requirement of sugar, the equation becomes:

`0.75x+0.75y=4.5` .....(2)

Multiplying equation (1) with 0.3 and subtracting (2) from (1)

`1.05x+0.75y=5.1` now subtracting (2) from this we get

=>
`0.3x=0.6`

So, x = 2

And as
`3.5x+2.5y=17` ; so substituting x = 2 here we get

`3.5(2)+2.5y=17`

`7+2.5y=17`

`2.5y=17-7`

`2.5y=10`

So, y = 4

Hence, there will be 2 loaves of bread and 4 batches of muffins.