Get Started with ixamBee
Start learning 50% faster. Sign in now
Let man’s rate upstream be x kmph. Then his rate downstream = 3x kmph. ∴Rate in still water =1/2 (3x+x)kmph=2x kmph ⇒32 = 2x⇒x = 16⇒3x=48 ∴ Rate of the stream =1/2 (48-16)kmph=16 kmph Alternate Method: Let U = speed of man in still water & V = speed of water So here N = time of upstream/ time of downstream = 3 So U/V = (N+1)/(N-1) = (3+1)/(3-1) = 4/2 =2 V = 32/2 = 16kmph
A circle has a radius of 21 cm and the area of its sector is 308 cm². Find the angle subtended by the arc at the center of the circle. (Use π = 22/7)<...
Find the curved surface area of a cone whose height is 6 m and radius is 8 m. (in m 2 ) (approximate value) (The value of π is 22/7)
An edge of a variable cube is increasing at the rate of 2 cm/s. How fast is the volume of the cube increasing when the edge is 12 cm long?
The circumference of a circle is 44 cm and the length of the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the rec...
The volume of cone is 1320 cm3. If its height is 1.4 cm then find the radius of the cone.
The distance between the centers of two circles of radius 2 cm and 8cm is 10 cm. Find the length of the direct common tangent.
Rahul spends some part of his income and saves the remaining part. The ratio of his expenditure and saving is 3 : 4 respectively. If Rahul’s income i...
Length of a rectangle is equal to the side of a square. If area of the square and rectangle is 576 m2 and 384 m2, respectively the...
Find the cost of building a fence around a square field with area 529m2 at the rate of Rs.40 per meter ?
The base of the triangular area is two times its height. If the cost of farming area is Rs. 2000 and Rs. 80 per hectare. Find its base (1 hectare = ...
