A man sells his typewriter at 5% loss. If he sells it for Rs. 80 more, he will gain 5%. The cost price of the typewriter is

700

800

900

200

Explanation

At 5% loss. SP $= R s . \frac{95 x}{100}$

$N o w, \frac{95 x}{100} + 80 = \frac{105 x}{100}$

$=> \frac{105 x}{100} - \frac{95 x}{100} = 80$

$=> \frac{105 x - 95 x}{100} = 80$

$=> x = \frac{8000}{10} = R s .800$