Basic Maths Mcqs

Q.  A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job?

a. 48
b. 34(2/7)
c. 44
d. 45


ANSWER: See Answer
 
(1/A)+(1/B) = (1/20) (1/B)+(1/C) = (1/30) (1/A)+(1/C) = (1/40) Solving the three equations,
A=48
MCQs:  The speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. The speed of the stream is_______?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat covers a distance of 30 km in 2 ½ hours running downstream while returning it covers the same distance in 3 ¾ hours. What is the speed of the boat in still water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat goes 24 km downstream in 10 hours, it takes 2 hours more to cover the same distance against the stream. What is the speed of the boat in still water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A person can row at 9 kmph and still water. He takes 4 1/2 hours to row from A to B and back. What is the distance between A and B if the speed of the stream is 1 kmph?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A boat is rowed downstream at 15.5km/hr and upstream at 8.5 km/hr. The speed of the stream is________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The time taken by a man to row his boat upstream is twice the time taken by him to row the same distance downstream. If the speed of the boat in still water is 42 kmph, find the speed of the stream?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A man rows his boat 85 km downstream and 45 km upstream, taking 2 1/2 hours each time. Find the speed of the stream?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The speed of a boat in upstream is 60 kmph and the speed of the boat downstream is 80 kmph. Find the speed of the boat in still water and the speed of the stream?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts
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: T-Code Scripts