Mathematics - 22 July 2006

two brothers washed the family car in 24 mins. when they each wash the car alone, the younger brother took 20 mins longer to do the job than the older brother. how long did the older brother take to wash the car?(give quadratic eq'n)

2006-07-22 02:00:17 · 2 answers · asked by leo 2

2006-07-22 01:57:06 · 4 answers · asked by preity 1

dorothy drives 10 miles, then increases her speed by 10 miles/hour and drives another 25 miles. find her original speed if she drives for 45 mins.(pls give me with the quadratic equation...tnxÜ)

2006-07-22 01:46:55 · 7 answers · asked by leo 2

asume the question i asked in http://answers.yahoo.com/question/index;_ylt=Ao3laV7GIjkPtqM8lMify1rsy6IX?qid=20060721064648AAYmy6s
was rephrased as follows how would you solve it? i need aformula. I need to understand how to solve these kind of problems.
(a) 2 boys can dig 5 wells in 3 days. how many boys can dig 5 wells in 2 days.
(b) 2 boys can dig 5wells in 3 days. how many days can 3 boys dig 5 wells
(c) 3 boys can dig 5 wells in 2 days. how many days can 2 boys dig 5 wells.

2006-07-22 00:33:13 · 7 answers · asked by Omar 1