I have been studying really hard for my SAT, which takes place tomorrow. however, I've got things down pretty well you know? but I'm always stuck on the same type of question:
"if sammie can paint a fence in 4 hours, and george can paint it in 6, how fast can they get it done together?"
"If it takes cindy 30 minutes to fill a pool with buckets of water, john takes 45 minutes, and jack takes 1 hour and 30 minutes, how fast could they do it together?"
I've tried really hard i promise... but I always* get these questions wrong... I've checked several websites about it too :( please, could anyone tell me how to do either one of these? (without refering me to a website)?
thank you so much :)
2006-10-13
11:23:06
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6 answers
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asked by
Anonymous