With the aid of the current Andrew can tow a canoe 4 miles in 16 minutes, against the current it takes him 20 minutes the same distance, how fast does Andrew go in still water? How fast is the current?

0.225miles per minute for boat and 0.025  miles per minute for current

Step-by-step explanation:

you just gotta love river current problems

lets use the formula d=rt

we're gonna modify it a bit

when your riding in a canoe with the current your going to go faster than against the current so

with the current: d=(r+c)t

against current:d=(r-c)t

where

d=distance

c=rate of water

r=rate of boat

and

t= time

so

4=16(r+c)

4=16r+16c

simplify to

1=4r+4c

2nd equation:

4=20(r-c)

4=20r-20c

solve by elimination:

(1=4r+4c)5

5=20r+20c

-

4=20r-20c

1=40c

c=0.025-speed of water

4=20r-20(0.025)

4=20r-0.5

4.5=20r

4.5/20=r

0.225=rate of boat

hope this helps

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5