Arithmetic Mcqs


Q.  The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?

a. 17 kg
b. 20 kg
c. 26 kg
d. 31 kg


ANSWER: See Answer
 
Let A, B, C represent their respective weights. Then, we have: A + B + C = (45 x 3) = 135 …. (i) A + B = (40 x 2) = 80 …. (ii) B + C = (43 x 2) = 86 ….(iii) Adding (ii) and (iii), we get: A + 2B + C = 166 …. (iv) Subtracting (i) from (iv), we get : B = 31. B’s weight = 31 kg
MCQs:  A man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  The current of a stream runs at the rate of 4 kmph. A boat goes 6 km and back to the starting point in 2 hours, then find the speed of the boat in still water?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. What is the total distance traveled by the man?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. How far is the place?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man’s rate is________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man’s rate along the current is__________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is_________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row three-quarters of a kilometre against the stream in 11 minutes and down the stream in 7 minutes. The speed (in km/hr) of the man in still water is:_________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A man can row 9 1/3 km/hr in still water and he finds that is thrice as much time to row u p than as to row down the same distance in river. The speed of the current is:________?
Category: Mathematics Quizzes,   Published by: teswesm
MCQs:  A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?
Category: Mathematics Quizzes,   Published by: teswesm