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Mathematical problems in the second volume of eighth grade mathematics
Solution: If a farmer's manual harvesting efficiency is x hectares/hour, then the harvesting efficiency of a harvester is 150x hectares/hour.

100 The manual harvesting efficiency of farmers is 100x hectare/hour.

Harvesting 10 hectares takes 10/ 100 hours.

It takes a harvester to harvest 10 hectares 10/ 150x hours.

Fractional equation:

( 10/ 100 x)-( 10/ 150 x)= 1

Multiply the equation by 300 times at the same time, and you will get:

30-20 = 300 times

x= 1/30

Then the harvesting efficiency of a harvester is 150x hectares/hour = 150x 1/30 = 5 hectares/hour.

This harvester harvests 5 hectares of wheat every hour.