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Ugo [173]
3 years ago
6

seeped of boad in standing water is 9 kmph and the seeped of the steam is 1.5 kmph a man rows to a plance at a distance of 105 k

m and comes back to back to starting point​
Mathematics
1 answer:
Juliette [100K]3 years ago
6 0

Correct question is;

Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

Answer:

Total time = 24 hours

Step-by-step explanation:

We are given;

Speed of a boat in standing water = 9 kmph

Speed of the stream = 1.5 kmph

Distance rowed by the man; d = 105 km

He now came back to his starting point.

Thus, we can say that;

Speed upstream; V_up = 9 - 1.5 = 7.5 kmph

Speed downstream; V_down = 9 + 1.5 = 10.5 kmph

Now, we know that;

time = distance/speed

Thus;

Total time = time taken upstream + time taken downstrem

Total time = (105/7.5) + (105/10.5)

Total time = 14 + 10

Total time = 24 hours

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Answer:

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Step-by-step explanation:

Let  H represent the number of horses and  C represent the number of chickens. Since there are 32 legs altogether this means that on equation to use would be given by:

2C  +  4 H  =  32     (Eq. 1)

Another equation can be made from the fact that there are 11 heads or 11 animals altogether which can be written as:

C  +  H  =  11    (Eq. 2)

From Eq. 2, solve for the number of chickens:

C  +  H  =  11

C   =  11  - H    (Eq. 3)

Substituting Eq. 3 in Eq. 1, the number of horses can be determined:

2 C  +  4 H  =  32

2 ( 11  −  H )  +  4 H  =  32

22   −  2 H  +  4 H  =  32

2H  =  32  − 22

2 H  = 10

H = 5               Eq.4

Putting Eq.4 in Eq.1

2C + 4*5 =  32

2C = 32 - 20

2C = 12

C = 12/2

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3 years ago
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Answer:

Percentage profit=40%

Step-by-step explanation:

Cost price=120 Naira

Sold price=168 Naira

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Step-by-step explanation:

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Step-by-step explanation:

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