Question

A seller buys 10 phone chargers for rs.800 and sells them at the rate of rs.100 per charger. His gain percent is (a) 0.25 (b) 0.2 (c) 0.3 (d) 0.15

Answer 1

$cp = 800 \\ sp = 100 \times 10 = 1000 \\ p = 200 \\ p\% = \frac{200}{800} \times 100 = 25\%$

Answer 2

Answer:  a) The gain percent is 25% or 0.25

Step-by-step explanation:

C.P. of 10 chargers = Rs. 800

S.P. of 1 charger = Rs. 100

So , S.P. of 10 chargers = 100 x 10 = Rs. 1000

As S.P. > C.P.  therefore there is profit

Profit = S.P. - C.P. = Rs. 1000 - Rs. 800 = Rs. 200

Profit % = $\dfrac{Profit}{CP} \times 100 = \dfrac{200}{800} \times 100 = 25\%$

Hence, the gain percent is 25% or 0.25