Answer: An auto-rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4... View Article
Answer: A car is travelling 48 km in one hour. The distance travelled by car in 12 minutes is 9.6km.... View Article
Answer: The perimeter of a circle and its diameter vary directly with each other. The perimeter of the circle Circumference... View Article
Answer: If two quantities p and q vary inversely with each other then product of their corresponding values remains constant.... View Article
Answer: If two quantities x and y vary directly with each other, then ratio of their corresponding values remains constant.... View Article
Answer: If on increasing a, b decreases in such a manner that ab remains constant and positive, then a and... View Article
Answer: On increasing a, b increases in such a manner that a/b remains constant and positive, then a and b... View Article
Answer: When the speed remains constant, the distance travelled is directly proportional to the time. By the second equation of... View Article
Answer: X 12 6 Y 48 — If x and y varies directly, then; x/y = k If x=12 y... View Article
Answer: X — 60 Y 2 10 If x varies inversely as y, then x × y = k If... View Article
Answer: If 12 pumps can empty a reservoir in 20 hours, then the time required by 45 such pumps to... View Article
Answer: If x = 5y, then x and y vary directly with each other. x = 5y Then x/y =5/1... View Article
Answer: (b) 35 and 25 x and y are directly proportional. x ∝ y If x = 10 and y... View Article
Answer: (d) 500/3 m Distance travelled = 10km Time taken = 1 hr Distance travelled defines how much path an... View Article
Answer: (c) p × q remains constant. When two quantities p and q change in opposite directions, p×q remains constant.... View Article
Answer: (a) xy remains constant If two quantities x and y vary directly with each other, then xy = k... View Article
Answer: (a) 30 days 100 persons have food provision for = 24 days 1 person will have food provision for... View Article
Answer: (c) 20 km/h Speed = 12km/h Time taken = 20 minutes Time taken = 20/60 hr = 1/3 hr... View Article
Answer: (b) in inverse proportion. If both x and y are directly proportional, then 1/x and 1/y are in inverse... View Article
Answer: (d) speed and time taken. By the formula of speed we know; Speed = distance/time As we can see... View Article
