Question

A trader sells total 315 tv sets. He sells black and white tv sets at a loss of 6% and color tv sets at a profit of 15% thus he gains 9% on the whole. What are the no. Of black and white sets which he has sold?

Answer 1

Step-by-step explanation:

By alligation method

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Answer 2

There are 90 white tv sets and 225 color tv sets.

Step-by-step explanation:

Since we have given that

Loss % on white tv = 6%

Profit % on color tv = 15%

gain% on whole = 9%

Using "Mixture and Allegation" we get that

White tv        Color Tv

-6%                   +15%

            9%

--------------------------------

6%        :       15%

2           :       5

So, the number of white tv sets would be

$\dfrac{2}{7}\times 315=2\times 45=90$

The number of color tv sets would be

$\dfrac{5}{7}\times315=5\times 45=225$

Hence, there are 90 white tv sets and 225 color tv sets.

# learn more:

Traders cell total 315 tv sets sales back black and white tv set at a loss of 6% and colour tv set at a profit of 15% does he gain 10% on the whole what are number of black and white set which he has food

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