Question

Ryan and Max were asked by their class teacher to conduct an experiment using copper wire. Each of them got a 9″ copper wire. Ryan used the entire wire, while Max used only 3⁄4 of it to conduct his experiment. How much copper wire did Max use? A. 63⁄4 B. 48⁄4 C. 82⁄4 D. 22⁄6

Answer 1

No option is right.

Right answer is 27/4 inches.

Explanation:

Given:

Ryan and Max were asked by their class teacher to conduct an experiment using copper wire.

The length each of them had 9"

Max used = 3/4th = 3/4(9) = 27/4 inches

But Ryan used fully wire = 9 inches.

The questions is how much Max used.

Hence here we find that Max used only 27/4 inches of the wire

Hence none of the options given is right.

Answer 2

Option A.
`6(3)/(4)` inches

Explanation:

Ryan and Max were asked by their class teacher to conduct an experiment using copper wire.

Each of them got a 9 inches copper wire.

Ryan used the entire wire,

Max used =
`(3)/(4)` of 9 inches.

Max used =
`(3)/(4)` × 9

=
`(27)/(4)`

Now we convert this fraction into mixed fraction by dividing

=
`6(3)/(4)` inches

Max used only
`6(3)/(4)` inches of copper wire.

Option A.
`6(3)/(4)` inches