Question

4/9 kilogram of baking soda cost $2.How much does 1 kilogram of baking soda cost?

Answer 1

Answer:

4.5 usd

Step-by-step explanation:

$2 / 4 *9 =$4.5

hope this helps

Answer 2

Answer:

1 kilogram of baking soda costs $4.5

Step-by-step explanation:

To solve this problem, we will follow the steps bellow:

Using proportion;

Let x be the cost of 1 kg of baking soda

$\frac{4}{9}$ kilogram = $ 2

1 kilogram  = x

Cross - multiply

$\frac{4}{9}$  ×  x  = $2  ×   1

$\frac{4}{9}$  ×  x    = $2

$\frac{4x}{9}$ = $2

Multiply both-side of the equation by 9

$\frac{4x}{9}$ × 9= $2 × 9

At the left-hand side of the equation 9 will cancel-out 9, hence our equation becomes

4x = $18

Divide both-side of the equation by 4

$\frac{4x}{4}$  = $ $\frac{18}{4}$

x   = $4.5

1 kilogram of baking soda costs $4.5