a) 15.6 kmph b) 16.1 kmph c) 14$${\frac{5}{7}}$$ Kmph d) 14$${\frac{2}{7}}$$ kmph Answer: d Explanation: $$\eqalign{ & {\text{Average}}\,{\text{speed}}, ...
View QuestionOne-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey.
a) $$\frac{{600}}{{53}}$$ km/h b) $$\frac{{1200}}{{53}}$$ km/h c) $$\frac{{1800}}{{53}}$$ km/h d) $$\frac{{1600}}{{53}}$$ km/h Answer: c Explanation: Let distance ...
View QuestionA school has only four classes that contain 10, 20, 30 and 40 students respectively. The pass percentage of these classes are 20%, 30%, 60% and 100% respectively. Find the pass % of the entire school.
a) 76% b) 66% c) 56% d) 34% Answer: b Explanation: The number of pass candidates are 2 + ...
View QuestionA batsman makes a score of 270 runs in the 87th inning and thus increase his average by a certain number of runs that is a whole number. Find the possible values of the new average.
A batsman makes a score of 270 runs in the 87th inning and thus increase his average by ...
View QuestionA man travels equal distances of his journey at 40, 30 and 15 km/h. respectively. Find his average speed for whole journey.
a) 24 b) 25 c) 27 d) 28 Answer: a Explanation: Required average speed, $$ = {\frac{{\left( {3 \times ...
View QuestionThe average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is :
a) 46 years b) 45 years c) 48 years d) 42 years Answer: a Explanation: A + B + C + D + E = ...
View QuestionAverage of 80 numbers are 42. When 5 more numbers are included, the average of 85 numbers become 45. Find the average of 5 numbers.
a) 82 b) 89 c) 93 d) 98 Answer: c Explanation: Total of 80 numbers = 80 × ...
View QuestionA cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?
a) 85 b) 103 c) 82 d) 100 Answer: d Explanation: Let he scored x runs ...
View QuestionDeepak invested an amount of Rs. 21250 for 6 years. At what rate of simple interest will be obtain the total amount of Rs. 26350 at the end of 6 years?
a) 5 p.c.p.a b) 6 p.c.p.a c) 8 p.c.p.a d) 4 p.c.p.a Answer: d Explanation: $$\eqalign{ ...
View QuestionIf the simple interest on a sum of money for 15 months at 7(1/2) % per annum exceeds the simple interest on the same sum for 8 months at 12(1/2) % per annum by Rs. 32.50, then the sum of money ( In Rs.) is ?
If the simple interest on a sum of money for 15 months at $${\text{7}}\frac{1}{2}$$ % per annum ...
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