Boats & Streams Mcqs

Q.  In a river, a man takes 3 hours in rowing 3 km upstream or 15 km downstream. What is the speed of the current?

a. 2km/hr
b. 4km/hr
c. 6km/hr
d. 9km/hr


ANSWER: See Answer
 
Speed upstream = 3/3 km/hr =1 km/hr

Speed downstream = 15/3 km/hr = 5 km/hr

Speed of current = ½(5 -1) km/hr = 2 km/hr
MCQs:  The diameter of a circle is 105 cm less than the circumference what is the diameter of the circle?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The number of rounds that a wheel of diameter 7/11 m will make in going 4 km is:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A circular wire of radius 42 cm is cut and bent in the form of a rectangle whose sides are in the ration of 6:5 The smaller side if the rectangle is:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the diameter of a circle is increased by 100 % its area is increased by:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the radius of a circle be reduced by 50% its area is reduced by:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the circumference of a circle is 352 meters then its area in Sq.m is:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the diagonal of a square is doubled. How does the area of the square change?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the base of rectangle is increased by 10 % and the area is unchanged then the corresponding altitude must be decreased by:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length of a rectangle is twice its breadth, if length is decreased by 5 cm and the breadth is increased by 5 cm. The length of the rectangle is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A rectangle has 15 cm as its length and 159 cm2 as its area. Its area is increased to 1 1/3 times the original area by increasing only its length its new perimeter is:_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length of a rectangular room is 4 meters. If it can be partitioned into two equal square rooms. What is the length of each partition in meters:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by:________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A hall 20 m long and 15 m broad is surrounded by a verandah of uniform width of 2.5 m. The cast of flooring the verandah at the rate of Rs 3.50 per sq. Meter is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length of a rectangle is increased by 60 %. By what percent would the width have to be decreased to maintain the same area?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The length of a hall is (4/3) times its breadth. If the area of the hall be 300 square meters the difference between the length and breadth is__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  If the side of a square is increased by 25 % then how much percent does it’s area get increased:
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The ratio between the length and breadth of a rectangular field is 5:4. If the breadth is 20 meters less than the length. The perimeter of the field is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts