Question

Last year oranges were available at rupees 24 per dozen but this year they are available at rupees 50 per score. Find the percentage change in price of oranges (1 score =20)

Answer 1

Cost of oranges last year= 24 per dozen
Cost of oranges this year as per score= 50
Cost of 1 orange this year= 50÷20
=2.5
Cost of a dozen oranges this year=2.5×12
=30
Change in price=30-24=6
Percentage of change in price=6/24 × 100
=25%

Answer 2

In last year,

Cost of 1doze = 12orange = Rs24

=> Cost of 1 orange = 12/24 =Rs2

In this year,

Cost of 1score = 20oranges = Rs50

=> Cost of 1 orange = 20/50 = Rs2.5

Hence, increase in price % = 2/2.5−2 × 100 = 25 %