a) 28.32 b) 29.68 c) 28.78 d) 29.27 Answer: b Explanation: Total sum of 48 numbers = ...
View QuestionDistance between two stations A and B is 778km. A train covers the journey from A to B at 84 km per hour and returns back to A with a uniform speed of 56 km per hour. Find the average speed of train during the whole journey
a) 60 km/hr b) 30.5 km/hr c) 57 km/hr d) 67.2 km/hr Answer: d Explanation: $$\eqalign{ ...
View QuestionThere are two sections A and B of a class, consisting of 36 and 44 students’ respectively. If the average weight of section A is 40kg and that of section B is 35kg, find the average weight of the whole class.
a) 30 kg b) 35 kg c) 42.5 kg d) 37.25 kg Answer: d Explanation: ...
View QuestionFind the average of first 97 natural numbers
a) 47 b) 37 c) 48 d) 49 Answer: d Explanation: Average of 1st ...
View QuestionThe speed of the train going from Nagpur to Allahabad is 100 km/h while when coming back from Allahabad to Nagpur, its speed is 150 km/h. find the average speed during whole journey.
a) 125 km/hr b) 75 km/hr c) 135 km/hr d) 120 km/hr Answer: d Explanation: $$\eqalign{ ...
View QuestionThe average of the first five multiples of 9 is:
a) 20 b) 27 c) 28 d) 30 Answer: b Explanation: $$\eqalign{ & {\text{Required}}\,{\text{average}} ...
View QuestionThe average temperature for Wednesday, Thursday and Friday was 40°C. The average for Thursday, Friday and Saturday was 41° C. If temperature on Saturday was 42° C, what was the temperature on Wednesday?
a) 39° C b) 44° C c) 38° C d) 41° C Answer: a Explanation: ...
View QuestionAjit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:
a) 20 b) 21 c) 28 d) 32 Answer: c Explanation: ...
View QuestionThe average of first five multiples of 3 is:
a) 9 b) 10 c) 8 d) 11 Answer: a Explanation: First five multiples of three ...
View QuestionA student finds the average of 10 positive integers. Each integer contains two digits. By mistake, the boy interchanges the digits of one number say ba for ab. Due to this, the average becomes 1.8 less than the previous one. What was the difference of the two digits a and b?
a) 8 b) 6 c) 2 d) 4 Answer: c Explanation: Let the original number be ...
View Question