⟩ 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
3) 26
3) 26
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
Seven numbers are written in ascending order. The middle number is the average of the seven numbers. The average of the first three larger numbers is 58 and that of three smaller numbers is 24. What is the sum of all seven numbers? 1) 37.05 2) 30.75 3) 10.25 4) 10
A car covers first 39 km of its journey in 45 minutes and the remaining 25 km in 35 minutes. What is the average speed of the car? 1) 40 kmph 2) 54kmph 3) 48kmph 4) 42 kmph
3 men and 5 women visited a hotel. 3 men and 4 women spent Rs.6 each over their meal and the fifth women spent Rs. 1 more than the average of all men and women. Find the average of all men and women? 1) 48.88 2) 48 3) 4.11 4) 6.11
David invested part of Rs. 5000 at 5% and the rest at 8%. If his annual income from both is equal, then find the average rate of interest? 1) 6.15 % 2) 3.07% 3) 15.30% 4) 7.50 %
In a class test, 30% of the students wrote their solutions in Marathi and the others in English. The Average marks of the students who wrote in Marathi is 64 and the average marks of the students who wrote in English is 68. Find the average marks of all students? 1) 66.80 2) 66 3) 67 4) 67.80