My Math Forum 2) Yr 10 Word Problem

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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
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Quote:
 Originally Posted by KekkoMenny Please show the working out because I'm here for learning and not just getting the answer !!
Please show your attempt because we are here for directing and not just giving the answer !!

 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: 575 Thanks: 176 $\displaystyle speed=\dfrac{distance}{time} \\\;\\ time=\dfrac{distance}{speed} \\\;\\ distance= speed \ \cdot\ time$
May 18th, 2015, 08:32 AM   #6
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 Originally Posted by KekkoMenny Is nothing... I just can't.....
Are you saying that you do not know what "km/hr" means? That's a serious problem! You need to talk to your teacher about this!

 May 18th, 2015, 09:25 AM #7 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,279 Thanks: 1023 Kekko, can you solve this for x: 5x + 7 = 3x + 17 ?
May 18th, 2015, 01:27 PM   #8
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 Originally Posted by Country Boy Are you saying that you do not know what "km/hr" means? That's a serious problem! You need to talk to your teacher about this!
What that reply means? I pretty sure what km/h is.......

May 18th, 2015, 01:30 PM   #9
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Quote:
 Originally Posted by KekkoMenny 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.)
Ok i figure it out by myself Thanks to every one.

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