Question

Ryan buys a clock for Rs 3500 and sells it for Rs 4200. His gain percent is ……………
a. 20%
b. 10%
c. 30%
d. none of above​

Answer 1

• GIVEN:-

SP = Rs. 4200

CP = Rs. 3500

• To Find:-

Gain percent.

• SOLUTION:-

We know that,

$\large{\sf{Gain=SP-CP}}$

According to the question,

$\large\Longrightarrow{\sf{Gain=SP-CP}}$

$\large\Longrightarrow{\sf{Gain=Rs.(4200-3500)}}$

$\large\therefore\boxed{\sf{Gain=Rs. 700}}$

Now Gain percent,

$\large\Longrightarrow{\sf{Gain\%=\huge\frac{Gain}{CP}\large\times100}}$

Putting the values,

$\large\Longrightarrow{\sf{Gain\%=\huge\frac{700}{3500}\large\times100}}$

$\large\Longrightarrow{\sf{Gain\%=0.2\times100}}$

$\large\therefore\boxed{\sf{Gain\%=20\%}}$

So,

$\large\red\therefore\boxed{\sf{\red{His \:Gain\: percent\: is \:20\%}}}$