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Basic Maths 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?

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?

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?

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?

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?

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_________?

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?

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________?

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

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_________?

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_________?

A. 3
B. 7.5
C. 2.25
D. 1.5
Explanation:
M = 4.5
S = x
DS = 4.5 + x
US = 4.5 + x
4.5 + x = (4.5 – x)2
4.5 + x = 9 -2x
3x = 4.5
x = 1.5

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_________? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics 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________?

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________?

A. 1 kmph
B. 5 kmph
C. 8 kmph
D. 3 kmph
Explanation:
DS = 6
US = 4
S = ?
S = (6 – 4)/2 = 1 kmph

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________? Read More »

Basic Maths Mcqs, Boats and Streams, Mathematics Mcqs