Question

If the Cost Price of 20 books is equal to the selling price of 18 books, find the gain or loss percent ? or What sum of money will get you Rs 750 as Simple Interest in 5 years at the rate of 8.25% p.a? (Do any one) You Can give answer in mixed fraction or in decimals with 2 place​

Answer 1

Answer:

a) loss%= 11.11111%

(or)

b)

Step-by-step explanation:

a) CP of 20 books = SP of 18 books

Let the cost of 18 books be a

SP of 1 book = Rs. a/ 18

Cost price of 20 books = a

cost price of 1 book = a/20

loss on one book = a/18 - a/20

= a/180

loss% = 100*loss/CP

=100*a/180/a/20

= 100/9

= 11.1%

(or)

b)

Answer 2

Answer:

100%

Step-by-step explanation:

Let the cost price be 100

Cost price of 20 books = 20×100 = 2000

Selling price of 18 books = 2000

Selling price of 1 book = 2000/18

Profit = SP - CP

= 2000/18 - 100

= 2000-100/18

= 200/18

Profit % = Profit/CP × 100

= 200/18/100 × 100

= 200/18

= 100%

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