Melody

THANKS GINO.

My answer is wrong - silly me - Chris you better give Gino some more points!

(and you should subtract mine whil you are at it  ) :))

DO NOT REPEAT QUESTIONS LIKE  THIS OR YOU MAY FIND THAT ALL YOUR COPIES GET DELETED.

This question is not difficult

tony=3 bags/hour

R and D =(1+2)=3 bags /hour

After 1 hour R and D have collected the same as Tony

Here is a pointer:

purple and red usually do not go well together.

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ok ok I know that was weak - I'm a mathematician, what do you expect 

You are best to post an actual question - it is easier to explain that way   

Do not multiple post the same question.  Next time they might all be deleted.

If your question moves to the second page then you can repost but you should indicate that that is what you are doing.

50km/hr for 2 hours IS 100km in 2hours

40km/hour for 1/2 an hour is  20km in 1/2hour

total

120km in 2.5 hours

$${\frac{{\mathtt{120}}}{{\mathtt{2.5}}}} = {\mathtt{48}}$$

average speed is 48km/hour

use the site cale - inverse sin is the same as arc sin

enter like this

asin(.9622504486488889)=

Use the onsite calc on the home page to enter it.

I liked you explanation to Kitty.

Your pun on 'deer' was cute too :))