Question

An electrical light circuit in John's welding shop had a load of 2800 watts. He changed the circuit to ten 150-watt bulbs and six 100-watt bulbs. What fraction represents a comparison of the new load with the old load?

Fractions
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asked 2021-02-03
An electrical light circuit in John's welding shop had a load of 2800 watts. He changed the circuit to ten 150-watt bulbs and six 100-watt bulbs. What fraction represents a comparison of the new load with the old load?

Answers (1)

2021-02-04

As given, the old load is 2800 watts and the new load is \(10(150)+6(100)=1500+600=2100\) watts. So, the fraction that represents a comparison of the new load with the old load is:
\(\displaystyle\frac{{2100}}{{2800}}=\frac{{{700}\cdot{3}}}{{{700}\cdot{4}}}=\frac{{3}}{{4}}\)

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