A man purchased 150 pens at the rate of 12 per pen. He sold 50 pens at

1.	A man purchased 150 pens at the rate of 12 per pen. He sold 50 pens at a gain of 10%. At what gain per centmust he sell the remaining pens, so as to gain 15% on the whole transaction?
Answer» Step-by-step explanation: alligation 10% X% 15% x-15% 5% 50 pens 100pens x-15/5 = 50/100 x-15/5 =1/2 2x-30 =5 x=35/2=17.5% he has to gain 17.5%

A man purchased 150 pens at the rate of 12 per pen. He sold 50 pens at a gain of 10%. At what gain per centmust he sell the remaining pens, so as to gain 15% on the whole transaction?

Answer»

Step-by-step explanation:

alligation

10% X%

15%

x-15% 5%

50 pens 100pens

x-15/5 = 50/100

x-15/5 =1/2

2x-30 =5

x=35/2=17.5%

he has to gain 17.5%

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A man purchased 150 pens at the rate of 12 per pen. He sold 50 pens at a gain of 10%. At what gain per centmust he sell the remaining pens, so as to gain 15% on the whole transaction?​

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A man purchased 150 pens at the rate of 12 per pen. He sold 50 pens at a gain of 10%. At what gain per centmust he sell the remaining pens, so as to gain 15% on the whole transaction?