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Ray Of Light [21]

3 years ago

13

I have 21 animals at home on the farm. Chickens and goats reside in the barn. How many is up on my hill? Knowing the number of f

eet may fit the bill. There are 58 feet that I walk to get to the barn. How many animals of each do I have on my farm?

1 answer:

Natasha2012 [34]3 years ago

5 0

Do you have 38 animals

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Step-by-step explanation

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3 years ago

A man walks for x hours at a speed of

alexandr1967 [171]

Given:

A man walks for x hours at a speed of (x + 1) km/h and cycles for (x - 1) hours at a speed of (2x + 5) km/h.

Total distance travelled is 90 km.

To find:

The value of x.

Solution:

We know that,

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$Speed\times Time=Distance$

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The man cycles for (x - 1) hours at a speed of (2x + 5) km/h, so the cycling distance is

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Now,

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$D_1+D_2=90$

$(x+1)x+(2x+5)(x-1)=90$

$x^2+x+2x^2-2x+5x-5-90=0$

$3x^2+4x-95=0$

$3x^2+19x-15x-95=0$

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$(3x+19)(x-5)=0$

$3x+19=0\text{ and }x-5=0$

$x=\dfrac{-19}{3}\text{ and }x=5$

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lbvjy [14]

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Step-by-step explanation:

375 x 0.14 = 52.5

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