Quantitative Aptitude for IBPS PO Prelims Exam: 21st August 2018

Directions (1-5): What will come in place of (?) in the following numbers Series? 
Q1. 3, 7, 23, 95, ?, 2879 

Q2. 2.5, 30, 300, 2400, 14400, ? 

Q3. 15, 28, 50, 108, 247, ? 

Solution: C

Q4. 510, 98, 1726, ?, 4094 

Q5. 1152, 288, 864, 216, 648, 162, ? 

Q6. The ratio of efficiency of Richa to that of Dipti is 3 : 5. If Richa and Raghu together can do the same work in 12 days and Raghu alone can complete it in 18 days then in how much time Dipti alone will complete the same work? 

Solution: B

Q7. The ratio of present ages of P, Q and R is 3 : 4 : 5. After 4 years, the average ages of all the three will be 24 years. What was the difference between ages of Q and R, 6 years before? 

Solution:A

Q8. There is a 120 litre mixture of alcohol and water. The ratio of alcohol to water is 7 : 5. A shopkeeper mixes a certain amount of water in order to make the ratio of alcohol to water 5 : 6. Find the new quantity of water is what percentage of original quantity of water in the mixture? 

Solution: A

Q9. The cost price of a T.V is 72% of marked price of a fridge. The shopkeeper allows 25% discount on marked price of fridge and sells it at a profit of 20%. If cost price of the fridge is Rs. 5,000 then what is the cost price of T.V.?

Solution: C

Q10. A train can cross a tunnel in 24 seconds. Another train can cross the same tunnel in 40 seconds. If length of tunnel is 120 m and ratio of their speed is (faster to slower) 4 : 3 then after how much time both train will cross each other if both trains are running towards each other in opposite direction. (Length of faster train is 75% of that of slower train) 

Solution: D

Directions (11-15): The following bar graph shows the percentage of male and females in five different localities of Delhi (Rest percentage is of children). Study the graph carefully and answer the related questions. Children are below 18years in age and are not classified as male and female. 

Q11. If total population of Mayur Vihar is 24,000 and that of Laxmi Nagar is 48,000 then what is the difference between no. of children in these localities? 

Solution: B

Q12. If total population of ITO is 18,000 then what is the no. of children who lives in ITO? 

Solution: C

Q13. What is the average of the number of males in Laxmi Nagar, ITO and Connaught Place if population of Laxmi Nagar, ITO and Connaught Place is 48,000, 18,000 and 40,000 respectively? 

Solution: A

Q14. If total population of Connaught place and Dwarka be 40,000 and 60,000 respectively then total no. of children in Dwarka is how much percent more/less than that in Connaught Place? 

Solution: D

Q15. Find the ratio of females in Mayur Vihar and Dwarka together to the females of Laxmi Nagar and Connaught place together