⟩ The average marks in Science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 instead of the actual marks 72 and 61 respectively, what would be the correct average? 1) 67 2) 68 3) 69 4) 70
3) 69
3) 69
The ratio of the speeds of a Bike, Car and Bus is 594. The average speed of the Bike, the Car and the Bus is 72 kmph together. What is the average speed of the bike and the Car together? 1) 84 2) 78 3) can't be determined 4) 64
The ratio of the speeds of a Car, Jeep and Tractor is 352. The speed of the jeep is 250% the speed of the tractor, which covers 360 km in 12 hours. What is the Average speed of Car and Jeep together? 1) 60 2) 70 3) 120 4) 66
If u, v, w, x and y are five consecutive odd numbers, then find the average? 1) (u+v+w+x+y)/5 2) u+4 3) 5uvwxy 4) None of these
The total marks obtained by a student in English, G.K. and Science together are 120 more than the marks obtained by him in G.K. .What is the average marks obtained by him in English and Science together? 1) 61 2) 51 3) can't be determined 4) 60
A motorist travels a distance of 60 km at the rate of 10 kmph,120 km at the rate of 60 kmph and 80 km at the rate of 40 kmph. What is the average speed for the whole journey? 1) 28 2) 32 3) 26 4) 20
Find the mean of y, y+4, y+8 and y+16. 1) (4y+7) 2) (4y+28) 3) (y+7) 4) (y+7)
The average age of 'x' men and 'y' women is 'a' years. If the average age of the men is 'd' years. Find the average age of women? 1) a + ( x(a-d) )/y 2) a - (xa +d)/y 3) a+ x(d-a)/y 4) None of these
A plane covered the first 40 km of its journey in 20 min and the remaining 30 km in 50 min. Find the average speed of plane in km/h. 1) 84 2) 60 3) 30 4) 42
The mean weight of 120 Employee in a IT department is 80 kg. The mean weight of the managers from the IT department is 90 kg while that of Engineers is 65 kg. What is the number of Engineers in IT Departments? 1) 72 2) 48 3) 60 4) 180
The average age of A, B and C is 18 year. Their ages are in the ratio 468 respectively. What is the age of the youngest one? 1) 12 2) 3 3) 24 4) 18