Ask question

Ask question

All categories

2 years ago

8

A shopkeeper mixed 10 kg of rice of one kind at Rs 20 per kg with 5 kg of (a) nother kind at Rs 15 per kg. If he sold the mixtur

e at the rate of Rs 22 per kg what was profit percentage?

1 answer:

Inessa05 [86]2 years ago

5 0

Answer:

9%

Step-by-step explanation:

10kg=R 20

5kg= R 15

??kg=R22

You add kgs it gives you 15kg and the and money it will give you R35 then

15kg=R35

???=R22

22/35×15 = 9,428571429

=9 %

You might be interested in

Only the a) part please!!!!

choli [55]

$(i)\\\\2A = \begin{pmatrix}3x \times 2 & 1 \times 2 & 5 \times 2\\0\times 2 & 2x \times 2 & -3 \times 2\end{pmatrix} = \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix}\\\\\\(ii)\\\\2A + B = C\\\\\implies \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix} + \begin{pmatrix}y & 0 & -4\\1 & -3y & 2\end{pmatrix} = \begin{pmatrix}31& 2 & 6\\1 & 17& -4\end{pmatrix}$

$\implies \begin{pmatrix}6x+y & 2+0 & 10-4\\0+1 & 4x-3y & -6+2\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\\\implies \begin{pmatrix}6x+y & 2 & 6\\1 & 4x-3y & -4\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\text{System of equations},\\\\6x +y =31,~~ 4x -3y = 17\\\\\\(iii)\\\\6x +y-31 =0 \\\\4x-3y -17=0\\\\\text{Solving by cross multiplication method}\\\\\\\dfrac x{1(-17) - (-31)(-3)} = \dfrac y{4(-31) - 6(-17)} = \dfrac 1{6(-3) - 4(1)}$

$\implies \dfrac{x}{-17 -93} = \dfrac{y}{-124 +102} = \dfrac 1{-18-4}\\\\\\\implies -\dfrac{x}{110} = -\dfrac{y}{22} = -\dfrac 1{22}\\\\ \implies \dfrac{x}{110} = \dfrac{y}{22} = \dfrac 1{22}\\\ \\\text{Hence,}\\\\\\x=\dfrac{110}{22}=5,~~~~ y= \dfrac{22}{22} =1$

7 0

2 years ago

Read 2 more answers

Can i please get help with this question?

Feliz [49]

The first letter because 1•5 = 5. 2•5 equals ten etc

4 0

3 years ago

What is 25 divided by .5

Stella [2.4K]

5
because 5 goes 5 times into 25 also its a square root of 25 hope this helped <span />

4 0

3 years ago

Read 2 more answers

A right cone has a slant height of 25 feet, and the diameter of the base is 48

JulijaS [17]

Answer:

7

Step-by-step explanation:

4 0

3 years ago

What is 321×23 <br><br> one more thing<br><br> what is 3,829÷1221

Archy [21]

321 times 23 is 7,383
3,829 divided by 1,221 is (rounded to the nearest hundredth) 3.14
(the real number was: 3.13595414)

3 0

4 years ago