WBCS Mains 2020 Official Paper-VI

The simplified value of $\frac{1+984762\times 984764}{984763\times 984763}$ is:

The income from a bus in every trip is Rs. $100$. If the bus fare increases by $50\%$ and the number of passengers decreases by $20\%$, then the income in every trip becomes:

The price of sugarcane rises by $20\%$. By how much percent must a housewife reduce her consumption so that her expenditure remains the same?

The cost price of article A is Rs. $200$ and the selling price of another article B is Rs. $308$. If the selling price of A is equal to the cost price of B, then the profit after selling A is $10\%$. What is the profit percentage on B?

In an election, $15\%$ of voters did not cast their votes. Ratanbabu got $62.5\%$ of the votes cast and was declared elected by a majority of $3400$ votes. Find the total number of voters.