Question

an electrician needs 8 rolls of electrical wire to wire each room in a house. how many rooms can he wire with 4/5 of a roll of wire? write your answer as a fraction or as a whole or mixed number. rooms submit

Explanation:

Step1: Identify the relationship

We know that 8 rolls wire 1 room. So to find rooms per roll, it's \( \frac{1}{8} \) rooms per roll.

Step2: Calculate rooms for \( \frac{4}{5} \) roll

Multiply rolls by rooms per roll: \( \frac{4}{5} \times \frac{1}{8} = \frac{4}{40} = \frac{1}{10} \)

Answer:

\( \frac{1}{10} \)