How To Solve A Rate Problem

How To Solve A Rate Problem-29
For example: Three plows working at identical constant rates can clear 123 ft of snow per minute. Note the absolute rate does not change, since we are multiplying top and bottom by 40, so the value is constant.41*40 feet / 40 plow-minutes = 1640 feet / 40 plow-minutes. Learn to Answer GMAT Reading Comprehension Title question 9.At this rate, how much snow could 8 plows remove in 5 minutes? Grockit, an online test prep game, is the smartest way to study for your test.

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To find this, we find the reciprocal of 13/42.42/13 hours/truck = 3 3/13 hours/truck. Objects moving at given speeds on the GMAT usually travel toward or away from each other. To catch up the 180 miles, it will take Train B 6 hours.

Remember the question is asking for the number of hours to fill 1 truck, NOT the number of trucks completed in 1 hour. In the three hours from 6pm to 9pm, A gets to mile marker 180.

Students can practice in adaptive solo games, play social learning games with peers, and work with experts that match their specific needs.1.

Complete GMAT RC Questions in less than 1 minute and 50 seconds2.

A.3.a Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane.

For example, if it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in 35 hours?

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Note that when working together, the total time to complete the same task will be less than BOTH of the individual rates, but not necessarily in proportion. A second worker can load the same truck in 7 hours. Keep in mind that the number of workers (at the same efficiency) is inversely proportional to the amount of time it takes one to complete a given task. Feet and minutes are already compared, so all we have to is add “plows” to the expression.

Nor, are you averaging or adding the given times taken. If both workers load one truck simultaneously while maintaining their constant rates, approximately how long, in hours, will it take them to fill 1 truck? It may help consider the unit man-hours as the multiplication between workers and time, which is then compared to the work completed. If we divide 123 ft/min by 3 plows, we get:123 ft/minute/3 plows = 41 ft/plow-minute At this rate, if we want to increase minutes to 5 and plows to 8, we can simply insert these into the existing rate.


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