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Aptitude

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_________?

Basic Maths Mcqs, Boats and Streams, Mathematics 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_________?

A. 6 kmph
B. 7 kmph
C. 8.5 kmph
D. 8 kmph
Explanation:
S = 1
M = x
DS = x + 1
US = x – 1
35/(x + 1) + 35/(x – 1) = 12
x = 6

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_________? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 8 kmph
B. 4 kmph
C. 2 kmph
D. 10 kmph
Explanation:
M = 45
S = 1.5
DS = 6
US = 3
AS = (2 * 6 * 3) /9 = 4

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? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 10 kmph
B. 21 kmph
C. 8 kmph
D. 12 kmph
Explanation:
S = 4
M = x
DS = x + 4
US = x – 4
6/(x + 4) + 6/(x – 4) = 2
x = 8

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? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 6.24 km
B. 6 km
C. 5.76 km
D. 5.66 km
Explanation:
M = 6
S = 1.2
DS = 7.2
US = 4.8
x/7.2 + x/4.8 = 1
x = 2.88
D = 2.88 * 2 = 5.76

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? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 3.12 km
B. 2.88 km
C. 3 km
D. 2 km
Explanation:
M = 6
S = 1.2
DS = 6 + 1.2 = 7.2
US = 6 – 1.2 = 4.8
x/7.2 + x/4.8 = 1
x = 2.88

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? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs

A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs /
A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?

A. 3 kmph
B. 1.5 kmph
C. 13 kmph
D. 6.5 kmph
Explanation:
72 — 9 DS = 8
? —- 1
45 —- 9 US = 5
? —- 1 S = ?
S = (8 – 5)/2 = 1.5

A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 2 kmph
B. 8 kmph
C. 16 kmph
D. 4 kmph
Explanation:
30 — 3 DS = 10
? —- 1
18 —- 3 US = 6
? —- 1 M = ?
M = (10 + 6)/2 = 8

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? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs

A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs /
A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?

A. 5 kmph
B. 10 kmph
C. 30 kmph
D. 15 kmph
Explanation:
US = 25
DS = 35
M = (35 – 25)/2 = 5

A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

Basic Maths Mcqs, Boats and Streams, Mathematics 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?

A. 60 kmph
B. 10 kmph
C. 30 kmph
D. 5 kmph
Explanation:
US = 25
DS = 35
M = (35 + 25)/2 = 30

A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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________?

Basic Maths Mcqs, Boats and Streams, Mathematics 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________?

A. 10 kmph
B. 5 kmph
C. 20 kmph
D. 22 kmph
Explanation:
M = 15
S = 5
DS = 15 + 5 = 20

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________? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs