Question

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

Answer 1

Answer:

87.5%

Step-by-step explanation:

Solution Given below

CP of 16 notebook = Sp of 30 notebooks

To find Gain

SP = Rs 30

CP = RS 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%

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

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