Question

The mechanical efficiency of a certain engine is specified to be 82.5%. This means that eighty two point five percent of its indicated or theoretical horsepower becomes brake horsepower. If the indicated horsepower of the engine is a 172, What is the brake horsepower? Round to the nearest whole number

Answer 1

142

Explanation:

If 82.5% of the indicated horsepower becomes brake horsepower, and the indicated horsepower is given, that means we just need to find 82.5% of 172.

172 * 0.825 = 141.9

That, rounded up, gives us the final answer of 142.

Hope this helps!