Mathamania discussion
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Elaine
(new)
Jan 26, 2009 09:48PM
The number of blues was 50 greater than 5 times the number of reds. Also, the number of reds was 210 less than the number of blues. How many were red and how many were blue?
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There is 10 marbles in a bag. 3 of them are red, 5 of them are blue and 2 are them are yellow. What is a possibility that Sandra will pick blue marbles two times in a row without putting back the marble in after she draws out the first one?
At 1p.m. Chester left the roundup and began the 66-mile trip to Dodge City. At 2p.m. Marshal Dillon left Dodge City to meet Chester. Marshal Dillon's speed was twice that of Chester, and they met at 9p.m. How fast did each man ride?
No, they didn't. It's a uniform motion problem: D1 + D2 = k. So just remember that, combined, the total distance 66 miles. :)
No. Sorry, I wasn't very clear. Rc=Rate of Chester. Tc=Time of Chester. Rd=Rate of Dillon. Td=Time of Dillon. You multiply them because rate x time equals distance (as shown in post 10). Does that make sense?
Here it is:At 1p.m. Chester left the roundup and began the 66-mile trip to Dodge City. At 2p.m. Marshal Dillon left Dodge City to meet Chester. Marshal Dillon's speed was twice that of Chester, and they met at 9p.m. How fast did each man ride?




