Let the speed of the boat in still water and the speed of the current be ‘x’ km/hr and ‘y’ km/hr, respectively Upstream speed of the boat = (x – y) = 80/8 = 10 km/hr Or, 20 – y = 10 Or, y = 20 – 10 = 10 km/hr Therefore, downstream speed of the boat = 20 + 10 = 30 km/hr Required time taken = 150/30 = 5 hours
Which one of the following is not a ‘Greenhouse Gas’?
Which of the following statements about colloids is NOT true?
Which element is often referred to as the "Stranger Gas"?
From which source is the purple dye known as litmus solution extracted?
Which planet is known as the "Red Planet"?
What is the common name of the compound with the formula C6H5NH2?
Litmus paper, used to test pH levels, is derived from which organism?
What term is used for atoms that have the same number of protons but different numbers of neutrons?
Which drug is used to cure Hypertension?
Which chemical compound is commonly used in baking to provide more volume and a lighter texture to baked goods?
