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Mathematics
OpenStudy (anonymous):

Anyone good with rate, time and distance word problems? I only got two problems left and if someone would just help me set them up I'm sure I can finsh them.. pls pls pls 1.) Two cyclists, 42 miles apart, start riding toward each other at the same time. One cycles 2 times as fast as the other. If they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist? 2.)Mutt and Jeff need to paint a fence. Mutt can do the job alone 5 hours faster than Jeff. If together they work for 24 hours and finish only of the job, how long would Jeff need to do the job alone?

OpenStudy (anonymous):

first one we can say that their combined speed is 3x and then solve \[42=6x\] for x

OpenStudy (anonymous):

x=7

OpenStudy (anonymous):

i.e. distance = rate times time, distance = 42, rate is 3x and time is 2 hours. so one has rate 7 and the other has rate 21

OpenStudy (anonymous):

are you missing part of the second one?

OpenStudy (anonymous):

second one the copy and paste didn't work because of the image

OpenStudy (anonymous):

yeah in 24 hours they only finish 7/8 of the job

OpenStudy (anonymous):

srry

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