Quantitative aptitude

Direction: Find out the wrong number in the following number series. Q. 6.5, 11, 22, 25.5, 51, 54.5 A.11 B.51                                                       C.54.5                                                    D.6.5                                                      E. None of these Sol: 7.5 + 3.5 = 11 11 * 2 = 22 22 + 3.5 = 25.5 25.5 * 2 = 51 51 + 3.5 = 54.5  

Direction: Following question contains two equations as I and II. You have to solve both equations and determine the relationship between them and give answer as, Q)          I: x2 + 13x + 40 = 0 II: y2+ 9y + 20 = 0 A.            x < y B.            x > y C.            x ≤ y D.           

P, Q and R started a business by investing Rs. 12000, Rs. 15000 and Rs. 18000 respectively. After 5 months, P invested Rs. 3000 more and after 3 more months, R withdraws Rs. 3000. Find the share of Q, if the total profit at the end of the year is Rs. 73200? A.Rs. 23600 B.Rs.

Direction: Following question contains two equations as I and II. You have to solve both equations and determine the relationship between them and give answer as, Q.           I: x2 – x – 12 = 0 II: y2 – 2y -15 = 0 A.            x < y B.            x > y C.            x ≤ y D.           

A Jar contains 90 litres of the mixture of milk and water in the ratio of 5: 4 and 45 litres of the mixture is taken out. Then added x liters of the water in the remaining mixture, the ratio of the milk and water becomes 2: 3. Find the value of x? A.18 B.17.5

Direction: Find out the wrong number in the following number series. 18, 45, 90, 220, 450 A.450 B.18 C.220 D.45 E. None of these Sol: 18 * 2.5 = 45 45 * 2 = 90 90 * 2.5 = 225 225 * 2 = 450

The ratio of the length and breadth of the rectangle is 3:2. If the breadth of the rectangle is equal to the side of the square, the radius of the circle is 16.66% more than the length of the rectangle and the area of the circle is 1386m2. Then find the perimeter of the square?

Direction: Following question contains two equations as I and II. You have to solve both equations and determine the relationship between them and give answer as, Q.           I: 5×2 – 18x + 9 = 0 II: 4y2 + 9y – 9 = 0 A.            x < y B.            x > y C.            x ≤ y

Sakshi invested Rs. 30000 in CI at the rate of x % per annum and Rs. 40000 is invested in SI at (x + 5) % rate of interest for one year if she received the total amount at the end of the year is Rs. 75500, then find the rate of interest per annum

4/15 of 393 + 7/12 of 473 = ? × (1.99 + 1.01) A.127 B.137 C.157 D.177 E.147 Sol: 4/15 of 393 + 7/12 of 473= ?x (1.99 + 1.01) or, ? x 3 = (4/15) x 393 + (7/12) x 473 or, ? x 3 = (4/15) x390 + (7/12) x 473 or, ?