Question

Toshiba bought 100 hens for Rs 8000 and sold 20 of these at a gain of 5%. At what gain
percent she must sell the remaining hens so as to gain 20% on the whole?
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Answer 1

Answer:

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Answer 2

Answer:

23.75%

Step-by-step explanation:

If CP of 100 hens = Rs. 8000,

CP of 1 hen = $\frac{8000}{100}$  

CP of 20 hens = $\frac{8000}{100}$ * 20 = Rs. 1600

Gain earned by selling 20 hens = 5%

SP of 20 hens = (100+gain%)/100 * CP

           Gain = 7920 - 6400

                    = rs 1520

Gain% = gain/CP * 100=  $\frac{1520}{6400} * 100$

                                    = 23.75%

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