Question

Last week, steaks cost $280 for 7 pounds. This week, they will decrease 25% per pound. What will be the cost per pound, after the decrease?

Answer 1

The cost of 7 pounds is 280 dollars.

Therefore the cost of per pound is by unitary method is,

$\frac{280}{7}=40\text{ }$

Therefore, the cost per pound is 40 dollar.

It is given that the pound are decrease by 25 percent.

Therefore.,

The cost per pound reduces to ,

$40\times\frac{25}{100}=10.$

To calculate the cost per pound after decrease is,

The difference of original cost per pound and cost per pound after decrease.

$40-10=30.$

The cost per pound after decrease is 30 dollar.