Question

Robert buys 3 pounds of bananas at $0.50 per pound and 3 pounds of apples at $1.00 per pound. Which of the following expressions represents the total cost of the fruit he bought (in dollars

Answer 1

Well I mean we know he spent a total of $4.50, but since we don't have any of the answer choices this is almost impossible. 

Answer 2

The answer is $3(0.50+1.00)

Explanation:

Robert bought 3 pounds of bananas at $0.50 per pound which can be expressed as:

`3*0.50`

And 3 pounds of apples at $1.00 per pound which can be expressed as:

`3*1.00`

As Robert bought the apples and bananas, you can add both expressions:

`3*0.50 + 3*1.00`

This expression can be factorized as:

`3(0.50+1.00)`

or

`3(1.50)`

Both expressions will give you the same result, which is $4.50.