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May 18th, 2015, 12:37 AM  #1 
Newbie Joined: May 2015 From: Australia Posts: 10 Thanks: 0  2) Yr 10 Word Problem
Quest 7. The distance between two towns A and B is 450km. Find x if: (a) the trip takes x hours at an average speed of 90km/h. (b) the trip takes (5 1/4)* at an average speed of x km/h. (c) the trip takes 5 hours, travelling x hours at 110km/h and the remaining time at 60km/h. Thank YOU! Please show the working out because I'm here for learning and not just getting the answer !! * (5 and a quarter = 5 hours and 45 min. SORRY if I wrote it wrong is my first time typing fractions on internet and it is really different from the work book, SORRY.) 
May 18th, 2015, 03:05 AM  #2 
Newbie Joined: May 2015 From: Australia Posts: 10 Thanks: 0 
ehmm... 5 hours and 15 minutes.. not 45 sorry!

May 18th, 2015, 03:16 AM  #3 
Senior Member Joined: Jul 2014 From: भारत Posts: 1,178 Thanks: 230  
May 18th, 2015, 03:39 AM  #4 
Newbie Joined: May 2015 From: Australia Posts: 10 Thanks: 0 
Is nothing... I just can't.....

May 18th, 2015, 04:50 AM  #5 
Senior Member Joined: Apr 2014 From: Europa Posts: 584 Thanks: 177  $\displaystyle speed=\dfrac{distance}{time} \\\;\\ time=\dfrac{distance}{speed} \\\;\\ distance= speed \ \cdot\ time$ 
May 18th, 2015, 08:32 AM  #6 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902  
May 18th, 2015, 09:25 AM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 
Kekko, can you solve this for x: 5x + 7 = 3x + 17 ?

May 18th, 2015, 01:27 PM  #8 
Newbie Joined: May 2015 From: Australia Posts: 10 Thanks: 0  
May 18th, 2015, 01:30 PM  #9  
Newbie Joined: May 2015 From: Australia Posts: 10 Thanks: 0  Quote:
 

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