Exercise – 3 - Aptitude

Out of three numbers, the first is twice the second and is half of the third. If the average of the

     three numbers is 56, then find three numbers?

• 48,96,24

• 48,24,96

• 96,24,48

• 96,48,24

Of the three numbers, second is twice the first and is also thrice the third. If the average of the     

     three numbers is 44, find the largest number?

• 24

• 36

• 72

• 108

The average age of an adult class is 40 years. 12 new students with average age of 32 years

      join the class, thereby decreasing the average the class by 4 years. Find the original strength  

      of the class?

• 10

• 11

• 12

• 15

A ship sails out to a mark at the rate of 15 Km/hr and sails back at the rate of 10 km/hr.

     Find the rate of sailing?

• 12.5     Km/hr

• 12 Km/hr

• 25 Km/hr

• 5 Km/hr

The average consumption of petrol for a car for seven months is 110 litres and for next five  

      months it is 86 litres. Find the average monthly consumption?

• 98 litres

• 100 litres

• 102 litres

• 96 litres

The average weight of A, B & C is 45 Kg. If the average of A and B be 40 Kg and that of 

      average of B and C be 43 Kg, then find the weight of B ?

• 17 Kg

• 20 Kg

• 26 Kg

• 31 Kg

The average of the daily income of A, B and C is Rs. 60. If B earns Rs. 20 more than C and 

      A earns double of what C earns, then find the daily income of C ?  

• Rs. 40

• Rs. 60

• Rs. 75

• none of these

A batsman has a certain average runs for 11 innings. In the 12^th innings he made his score of

     90 runs and thereby decreases his average by 5. Find his average after 12^th inning?     

• 135

• 140

• 145

• 150

A cricketer scored 180 runs in the first test and 258 runs in the second. How many runs 

     should he score in the third test so that his average score in the three tests would be 230 runs?

• 219

• 242

• 334

• none of these.

The average weight of 8 men is increased by 2.5kg when one of them whose weight is 56 kg  

       is replaced by a new man. Find the weight of the new man ?

• 76

• 74

• 72

• 70