Math Is Fun Forum

Nic12367

Guest

Maths Homework HELP

This is a question that i am stuck on plz help...

Calum was floating sown a river on a raft, when, half a mile downstream, his brother Duncan set off in a canoe. Duncan paddled downstream as quickly as he could, thenturned round and paddled back again, still at his best pace. he arrived back at his starting point just as Calum floated by.
Asum ming Duncan's best pace in still water is 10 times that of the river current, how far didi he travel?

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Maths Homework HELP

"tms" = multiply or times
rate tms time = distance

So, Time = Dist/Rate

time downsteam + time upstream = 1/2 mile time without paddles
DIST/11 + DIST/9 = (1/2 mile)/1

9DIST + 11DIST = (99/2) miles

20DIST = 99/2 miles
Duncan DISTance one-way = (99/40) miles one-way.
Double that if want round trip of (99/20) miles.

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igloo myrtilles fourmis

Nic12367

Guest

Re: Maths Homework HELP

Thx:D