Mohit lost $18 \%$ by selling a bicycle for $Rs.\, 1230$. What percent shall he gain or loss by selling it for $Rs.\, 1600 ?$
$6 \frac{2}{3} \%$ loss
$4 \%$ gain
$6 \frac{2}{3} \%$ gain
None of these
A cloth merchant says that due to slump in the market, he sells cloth at $10 \%$ loss, but he uses a inaccurate metre scale and actually gains $15 \%$. Find out the actual length of the scale. (in $cm$)
Suresh buys a camera for $Rs.\,1800$ and sells it at $10 \%$ loss. Find out its selling price. (in $Rs.$)
Suresh purchased a $TV$ set for $Rs.$ $11250 .$ He spent $Rs.\,800$ on installation and $Rs.$ $150$ on transportation. At what price should it be sold so that the profit earned would have been $15 \%$, if no discount was offered? (in $Rs.$)
A men bought apples at the rate of $8$ for $Rs.\, 34$ and sold them at the rate of $12$ for $Rs.\, 57 .$ How many apples should be sold to earn a net profit of $Rs.$ $45 ?$
A reduction of $21 \%$ in the price of an item enables a person to buy $3\, Kg$ more for $Rs.\,100.$ The reduced price of the item per $Kg$ is (in $Rs.$)