Question

In a box of 720 pens,40% of the pens are blue. how many blue pens are there in the box?

Answer 1

blue pens=288

Explanation:

blue pens=720×40%

blue pens=720×40/100

blue pens=288

Answer 2

`\huge{ \fbox{ \sf{288}}}`

Explanation:

`\star{ \text{ \: Given \: : }}`

`\hookrightarrow{ \sf{Total \: number \: of \: pens \: = \: 720}}`

`\hookrightarrow{ \sf{Percentage \: of \: pens \: that \: are \: blue \: in \: colour \: : 40\% \: }}`

`\star{ \text{ \: To \: find \: \sf: Total \: number \: of \: blue \: pens}}`

`\mathfrak{Let's \: solve} :`

`\mapsto{ \sf{ \:40 \: \% \: of \: 720}}`

`\text{Step \: 1 \: : }` Convert percentage into fraction.

To convert the percent into a fraction, divide it by 100 and remove the % symbol.

`\mapsto{ \sf{ (40)/(100) * 720}}`

`\text{Step \: 2 \: : }` Multiply

To multiply one fraction by another, multiply the numerators for the numerator , and multiply the denominators for its denominator and reduce the fraction obtained after multiplication into lowest term.

`\mapsto{ \sf{ (40 * 720)/(100) }}`

`\mapsto{ \sf{ (28800)/(100) }}`

`\mapsto{ \sf{ \frac{288 \cancel{00} }{1 \cancel{00}} }}`

`\mapsto{ \sf{288}}`

There are 288 blue pens in the box.

Hope I helped!

Best regards! :D

~
`\sf{TheAnimeGirl}`