Question

3 What is the cost of 3 3/4 pounds of salmon at $14.80 per pound? The cost of the salmon is $

Answer 1

The cost per pound of salmon is $14.80.

To determine how much does 3 3/4 pounds of salmon cost, you have to multiply the said amount by the unit price.

To be able to perform the multiplication, first, you have to express the mixed number as an improper fraction:

-Divide 3 by 1 to express it as a fraction and add both fractions

`3(3)/(4)=(3)/(1)+(3)/(4)`

-To sum both fractions, they have to be expressed for the same denominator, so multiply the numerator and denominator by 4 to have both fractions expressed as quarters:

`(3\cdot4)/(1\cdot4)+(3)/(4)=(12)/(4)+(3)/(4)`

-Now that both fractions are expressed with the same denominator you can add them:

`(12+3)/(4)=(15)/(4)`

Next, is to multiply 15/4pounds by the unit price $14.80 per pound to calculate its value:

`(15)/(4)\cdot(14.80)/(1)=(15\cdot14.80)/(4\cdot1)=(222)/(4)\approx55.5`

The price of 3 3/4 pounds of salmon is $55.5