Question

the cost price of 36 books is equal to the selling price of 30 books. the gain per cent is:

Answer 1

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Given that

CP of 36 books = SP of 30 books

Solution

Let the SP of each books be ₹1. Then,

SP of 30 books = ₹30

CP of 30 books = ₹30

SP of 36 books = ₹36

SP > CP = Gain

Gain = SP - CP

= ₹(36 - 30)

= ₹6

Gain % = Gain/CP × 100

= 6/30 × 100

Answer = 20 %

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Answer 2

20%

Step-by-step explanation:

CP=36

SP=30

Gain=SP-CP=36-30=6

percentage= gain/cp×100= 6/30×100=20%