Q36. - Algebra 1

Question

An electric generator can power 3550 watts of electricity. Write and solve an equation to find how many 75 -watt light bulbs a generator could power.

Step-by-Step Solution

Answer

The number of electric bulbs is 47.

Step 1. Given.

Total power = 3550 watts.

Each light bulb needs = 75 watt

Step 2. What to find?

We have to find an equation to find the number of light bulbs. And then we have to solve it.

Step 3. Calculation.

Total power = 3550 watts.

Let a bulb needs $x$-watts.

So, the number of bulbs generator can power = $\frac{3550}{x}$.

 

Now we substitute x = 75 in the formula.

$\begin{array}{l}\frac{3550}{x}=\frac{3550}{75}\\ =47.33\end{array}$

Hence, the number of electric bulbs is 47.