Disha Expert Team Solutions for Chapter: SSC Multitasking Solved Paper 2017, Exercise 2: NUMERICAL APTITUDE

Two successive discounts of$30\%$ and $70\%$ are given. What will be the net discount (in percentage)? 

After giving a discount of $40\%$ on an article, there is still a profit of $25\%$. If no discount is given, then what will be the profit percentage?

Marks of A and B are in the ratio $5 : 7$ respectively. If the marks of A is $25$, then find the marks of B?

If the ratio of selling price and cost price is $3: 4$, then what is the loss percentage?

An article is sold at $30\%$ loss. If the selling price is increased by $50\%$, then what is the profit percentage? 

If a car travels a distance with $20\%$ less speed, then it will reach $15$ minutes late. What is the usual time(in minutes) taken by the car to travel the same distance?

A goes from Point X to Point Y at a speed of $60$ km/hr and comes back with a speed of $80$ km/hr. What is the average speed (in km/hr) of A for going and coming back? 

A certain amount double in $5$ years, when invested at simple interest. In how many years will it become $8$ times?