Question

if 4 pencils are bough for ₹17 and sold at the rate of ₹57 for a dozen pencils, the Percentage gain is​

Answer 1

Answer:

11.76%

Step-by-step explanation:

Price of 4 pencils = RS 17

Price of a dozen = Price of 12 pencils = 4pencils X 3 = 17 X 3

                           = 51

Selling price = 57

Gain = 57 - 51 = 6

Percentage gain = 6/51 X 100 = 11.76 %

Answer 2

Answer:

cp of 4 pencils = rupees 17

cp of 1 pencil = rupee 17/4

cp of 4 pencils = sp of 12 pencils = rupee 57

sp of 1 pencil = rupee 57/12

p = sp- cp

= [ 57/12 - 17/4] = 57-51/12 = 6/12 = 1/2

P% = 1/2 × 4/17 × 100 = 200/17 %