# How to construct linear equations Q2b) Q11 and Q13?

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I've found the formula for a which is #r=(v+mu)/(m+1)# . But I could construct equation for c without getting a bizarre answer.

For questions 11, I got the equation 10x+5(41-2x)=205 but x=0 in this case.

And lucky last questions 13

I did x=Apollo y=aph and z=ad

Z=x+7200 y=x-4000

So we have x+x+7200-400=303200

And go x=98800, complete different to the answer. Can't someone please correct my mistake? And I will love you forever:)

I've found the formula for a which is

For questions 11, I got the equation 10x+5(41-2x)=205 but x=0 in this case.

And lucky last questions 13

I did x=Apollo y=aph and z=ad

Z=x+7200 y=x-4000

So we have x+x+7200-400=303200

And go x=98800, complete different to the answer. Can't someone please correct my mistake? And I will love you forever:)

##### 1 Answer

#### Answer:

**2(b)**

**(11)** We have

**(13)** Mr. Aphrodite earn

#### Explanation:

**2(b)**

As

or

i.e.

or

**(11)** let there be

As total length is

**..................(A)**

Further, as three pieces of size

**..................(B)**

Now multiplying **(A)** by **(B)**, we get

and putting this in **(A)** we get

i.e.

Hence, we have

**(13)**

Let Mr. Aphrodite earn

As their total earnings are

or

or

and

Hence, Mr. Aphrodite earn