Let x be the speed of the boat in still water and y be the speed of the current of the river.
The downstream speed will be x+y, the upstream speed will be x-y.
but:
distance=speed*time
therefore; as the boat travels in 2 hours downstream we shall have:
2(x+y)=48......i
and as the boat travels upstream we shall have:
3(x-y)=48........ii
simplifying i and ii we get:
x+y=24....iii
x-y=16....iv
adding the above iii and iv we get
2x=40
x=40/2=20
substituting x=20 into iii we obtain:
20+y=24
y=24-20
y=4
so the speed of the boat in still waters is 20 miles per hour
the rate of the stream is 4 miles per hour
Answer:
Occupation -> a job or profession: his prime occupation was as editor.
• a way of spending time: a game of cards is a pretty harmless occupation.
2 the action, state, or period of occupying or being occupied by military force: the Roman occupation of Britain | the Nazi occupation.
• the action of entering and taking control of a building: the workers remained in occupation until October 16.
3 the action or fact of living in or using a building or other place: a property suitable for occupation by older people.
Step-by-step explanation:
hope it helps
Answer:
the mean of the data set is 15, i hope this helped you :))
Answer:
your sister would be 35
Step-by-step explanation:
