Question

A shopkeeper buys 72 articles for $82.80. How much will he have to pay if he buys 150 such articles.​

Answer 1

Answer: He have to pay $172.5 if he buys 150 such articles.

72 articles for --> $82.80
1 article for - - - > 82.80/72

150 articles for --> (82.80/72)*150
= $172.5

Answer 2

$172.5

Explanation:

Given:

Shopkeeper buys = 72 articles

Price = $ 82.8

To Find:

The amount he'll need to pay If he buys 150 articles.

Solution:

Amount if he buys 150 articles

`\boxed{\rm \: No. \: of \: articles \: he \:will \: buy × \cfrac{Cost \: of \: that \: article \: he \: has}{Number \: of \: articles \: he \: has}}`

`= \$ \bigg(\rm150 * \cfrac{82.80}{72}\bigg)`

`= \$ (150* 1.15)`

`= \$172.5`

So we can conclude that:

$172.5 he will have to pay if he buys 150 such articles.