Quantitative Aptitude Quiz For NIACL AO
Q1. X’s age 3 years ago was three time the present age of Y. At present, Z’s age is twice the age of Y. Also, Z is 12 years younger than X. What is the present age of Z?
X = 3Y + 3 …(i)
Z = 2Y …(ii)
X = Z + 12 …(iii)
From equations (i), (ii) and (iii)
X – 3Y = 3 and X – 2Y = 12
After solving these two resultant equations, we get
Y = 9 years
∴ Z’s present age = 18 years.
Q2. Aman invests a certain sum in scheme A at compound interest (compounded annually) of 10% per annum for 2 years. In scheme B he invests at simple interest of 8% per annum for 2 years. He invests in schemes A and B in the ratio of 1 : 2.The difference between the interest earned from both the schemes is Rs 990. Find the amount invested in scheme A.
Q3. Two partners invest Rs 12500 and Rs 8500 respectively in a business and agree that 60% of the profit should be divided equally between them and the remaining profit is to be divided in the ratio of their capital. If one partner gets Rs 240 more than the other, find the total profit made in the business.
Q4. A bag contains 5 red balls, 6 yellow and 3 green balls. If two balls are picked at random, what is the probability that both are red or both are green in colour?
Q5. A bag contains 4 red balls, 6 green balls and 5 blue balls. If three balls are picked at random, what is the probability that two of them are green and one of them is blue in colour?
Directions (6-10): Study the following graph carefully & answer the questions that follows:
Production of tyres by different companies in three consecutive years (in lakh)
Q6. What is approximate difference between average production of the 6 companies in 2002 and average production of same companies in 2004?
Q7. What is percentage increase in production by company A from 2002 to 2003?
Q8. Which of following companies recorded the maximum percentage growth from 2002 to 2004?
Q9. Production of company E in 2002 & production of company C in 2004 together is what percent of production of company D in 2003?
Q10. What is the ratio of production of company B in 2003 and company C in 2002 together to the company D and F in year 2004 together?
Directions (11-15): What should come in place of question mark (?) in the following number series?
Q11. 282, 286, 302, ?, 402, 502
Q12. 2187, 729, 243, 81, 27, 9, ?
Q13. 384, 381, 372, 345, 264, ?
Q14. 5, 9, 18, 34, 59, 95, ?
Q15. 8, 15, 36, 99, 288, ?