Question

6. The cost price of 16 books is equal to the selling price of 30 books. Find the gain%​

Answer 1

Here is your answer,

CP of 16 book = SP of 30 notebooks

To find gain

SP = ₹30

CP = ₹16

We use formula

Gain = SP - CP

Gain = 30 - 16

Gain = 14

Then we find gain%

We use formula

Gain% = Gain/Cost price*100

Gain% = 14/16*100

Gain% = 87.5%

Hope it helps uh.....

Have a great day......

Answer 2

Let the SP of 1 book = Rs 1

SP of 16 books = Rs 16

CP of 16 books = SP of 30 books

= Rs 30

SP of 30 books = CP of 16 books

= Rs 16

So, CP > SP

Loss = CP –SP

= 30 – 16

= Rs 14

$loss\% = \frac{loss}{c.p} \times 100 \\ loss\% = \frac{14}{30} \times 100 \\ loss\% = \frac{140}{3}\% \\ = 46 \frac{2}{3}$