⟩ Roy scores 80 runs in his sixth inning and thus increases his average by 5. What was his average after six innings? 1) 60 2) 65 3) 55 4) 58
3) 55
3) 55
The average age of 8 boys is 15 yrs and 7 girls is 20 yrs in a class. Find the average age of whole class? 1) 17 2) 18 3) 16.30 4) 17.33
The average speed of A ,B and C was 40kmph and for B,C and D it was 44 kmph. If the speed of D is 50kmph. Find the speed of A in Kmph? 1) 36 2) 38 3) 48 4) 43
ABC lends 1800 Rs. in four sums. If he gets 3% for Rs. 400, 5% for Rs.500, 7% for Rs. 300 and 6% for Rs.250. What approx. percentage must he get for remainder, if the average interest is 7.5%.? 1) 17. 71% 2) 8.30% 3) 7.25% 4) 17.07%
John found mean of 5 observations is 25 and when a constant value X is added to each observation, then new mean becomes 38. Find X; 1) 15 2) 13 3) 22 4) 29
Among three people, their ages are as follows; first person is thrice the age of third person and twice that of Second person. The average age of all three persons is 55, the smallest person is _______. 1) 28 2) 15 3) 30 4) 72
On account of 380 observations, first 200 have mean 10 and the average of remaining observations is 20.Find the average of 380 observations? 1) 14.73 2) 14.47 3) 15.50 4) 16
An athlete runs at u km/h for t1 hrs., v km/h for t2 hrs. Find avg. speed of an athlete for entire lap? 1) (ut1+vt2)/(t1+t2) 2) (u+v)t2/(t1) 3) (t1+vt2)/(u+v) 4) (u+v)/(t2+t1)
A train covers a km at an average speed of u km/h and b km at an average speed of v km/h. What is the average speed of the train in kmph for entire journey? 1) (a+b)/(u+v) 2) uv(a+b)/(av+bu) 3) au+bv/u+v 4) (av+bu)/uv(a+b)
The average weight of 40 employees is reduced by 1 kg. Among them 10 employees whose average weight is 20 kg are fired and 10 new employees are hired. Find the average weight of new employee. 1) 17 kg 2) 15.50 kg 3) 16.50Kg 4) 16Kg
Production of wheat in a village is increased from 120 ton to 219 ton in two years. What is the average increase in production per year? 1) 49.50% 2) 34.50% 3) 20% 4) 69%