Question

Joe ordered 20 chocolate boxes for his birthday party. If each chocolate box weighs 45 grams 20 centigrams, find the total weight of all the chocolate boxes ordered by Joe.

• A. 900 g
• B. 904 g
• C. 90.4 g
• D. 90.04 g

Answer 1

The correct option is B 904 g

$\text{Weight of 1 chocolate box}$
$\text{= 45 g 20 cg}$

$\text{∴ Weight of 20 such boxes}$ $\text{= 45 g 20 cg}\times 20$

Now, multiplying the units separately, we get:


$\text{Weight of 20 chocolate boxes}$ $\text{= 900 g 400 cg}$

$\text{Now, converting centigram to gram,}$ $\text{we get:}$

$\text{1 cg =}\frac{1}{100}\text{g}$
$400\text{cg}=\frac{400}{100}\text{g}=4\text{g}$

$\text{So, the total weight of 20 chocolate boxes}$
$=900\text{g}+4\text{g}=904\text{g}$