Question 4746: Solve the problem:
Jill is 22.5 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 1.5 km/hr. they meet in 5 hours. How fast is Joe walking?
solve the problem:
roberto invested some money at 6%, and then invested $4000 more than twice this amount at 11%. His total annual income from the two investments was $3800. How much was invested at 11%?
solve the problem:
A woman has $1.70 in dimes and nickels. She has 2 more dimes than nickels. How many nickels does she have?
thanks
Answer by longjonsilver(2297)   (Show Source):
You can put this solution on YOUR website! 1.
just think about this in a cool, logical manner :-)
They both start at the same time and meet after 5 hours, so if Jill walked at 1.5km every hour, in 5 hours she has gone 5*1.5 --> 7.5km.
So, Joe must have covered the rest of the 22.5km, because they have met. So he travelled 22.5-7.5 = 15km in 5 hours, so this speed is 15/5 --> 3 km/h.
How was that?
Jon.
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