Question

A boat has a speed of 5 mph in calm water. It takes the boat 3 hours to travel upstream but only 2 hours to travel the same distance downstream. Using the data in the table, what is the value of c, the speed of the current?

Answer 1

its speed downstream is 5 + c mph
upstream its 5 - c

now use the formula speed = distance / time to get value of c

Answer 2

hope this helps

Answer 3

do you need more help?

Answer 4

thanks, it did help

Answer 5

yw

Answer 6

i need hel p with another ?

Answer 7

Paul can install a 300-square-foot hardwood floor in 18 hours. Matt can install the same floor in 22 hours. How long would it take Paul and Matt to install the floor working together?

Answer 8

Paul can work at the rate of 300/18 sq ft per hour
Matt can work at the rate of 300/22 sq ft per hour

Answer 9

be back in a short while...

Answer 10

sorry I was so long away

actually you don't need to know the above rates of work

solve this equation for x

1/18 + 1/22 = 1/x

x is the required time