Question

You need 1 1/4 yards of wire to make 20 robotsTo make 16 robots, you will need yards of wire.Enter your answer as a fraction or whole number.

Answer 1

In order to solve this problem, let's use a rule of three:

20 robots need 1 1/4 yards of wire,

16 robots need x yards of wire:

`\begin{gathered} (20)/(16)=(1(1)/(4))/(x) \\ (20)/(16)=((5)/(4))/(x) \\ 20x=16\cdot(5)/(4) \\ 20x=4\cdot5 \\ 20x=20 \\ x=(20)/(20)=1 \end{gathered}`

So we need 1 yard of wire to make 16 robots.