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RRB NTPC 12 April 2016 Shift 3 Question 20

Question 20

A wholesaler purchased 7 hair clips for a rupee. How many for a rupee must he sell to get profit of 40%

Solution

C.P. of 7 hair clips = Re. 1

S.P. of 7 hair clips = 140% of 1 Rupee's

$$\frac{140}{100}$$=1.4

if he sold 7 pins in 1.4 Rupee's he will got a profit of 40%.

so,cost of 1 pin $$\frac{1.4}{7}$$=0.2: 20 paisa

so in 1 Rupee's he has to sold 5 hair pins: 5$$\times .20= 1 Rupee's$$



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