SSC CHSL 2016 (Tier-I) Question Paper (20-Mar-2018) ( Shift 2)

The difference between simple interest on a certain sum at the rate of $8\%$ per annum for $18$ months and $24$ months is $\text{Rs }452$. What is the sum (in $\text{Rs}$)?

If the loss incurred on selling an article is $23\%$, then what will be the ratio of its cost price and selling price?

An item is sold at two successive discounts of $20\%$ and $20\%$. The selling price of the article after the two discounts is $\text{Rs }1280$. If it is sold only at one discount of $30\%$, then what will be the selling price (in $\text{Rs}$) of the article?

If $x=\frac{\sqrt{5}-1}{\sqrt{5}+1}$ and $y=\frac{\sqrt{5}+1}{\sqrt{5}-1}$, then what is the value of $x-y$?

A, B and C can complete a work in $5$, $12$ and $30$ days respectively. In how many days can A, B and C together do $\frac{4}{7}$ of the same work?