Question

Articles are brought at Rs 45 per dozen and sold at Rs 85 per score. Find the gain or loss per cent.

Answer 1

HEY THERE!!

Question;-

Articles are bought at rs 45 per dozen and sold at rs 85 per score . find the gain or loss per cent.

Method Of Solution;

Note: 1 Dozen = 12

1 Score = 20

According to the Question;

Cost Price of Per dozen =45

•°• Cost price of 1 dozen=45/12

=3.75

Again,

Cost Price of Per Score= 85

•°• Cost price of 1 Score=85/20

=4.25

Therefore, Gain = 4.25-3.75 = 0.5

According to the Formula of Gain Percentage;

Gain% = Gain×100 /CP

= 0.5×100/3.75

= 50/3.75

= 50×100/375

= 5000/375

= 13.33%

Hence, Gain Percentage = 13.33%

Answer 2

cp of 12 article = 45
cp of 1 article = 45/12
cp of 1 article = 3.75


sp of 20 article = 85
sp of 1 article = 85/20
sp of 1 article = 4.25

sp >cp 
hence profit= 4.25-3.75=0.5
profit %= 0.5/3.75*100
profit %= 13.33


hope it's help you