Let the upstream and downstream speeds of the boat are x km/h and y km/h. So according to question: 42/x + 81/y = 8 And, 48/x + 54/y = 7 Let 1/x = a and 1/y = b So 42a + 81b = 8 ………. (i) And 48a + 54b = 7 …….. (ii) Solving (i) and (ii) we get a = 1/12 and b = 1/18 So x = 12 and y = 18 So the upstream and downstream speeds of the boat are 12 km/h and 18 km/h respectively. So the speed of the boat in still water = (12 + 18)/2 = 15 km/h So the time taken by the boat to cover 90 km in still water = 90/15 = 6 hours
When assessing which fast-food restaurant to eat a hamburger at, you are essentially assessing the ____________ in the fast-food market.
Which of the following is an example of non-store retailing?
Buying a book at www.amazon.in to give as a birthday present is an example of a(n) _____ transaction.
Which of the following is NOT a function of price?
The type of demand forecasting, where a mathematical formula is created to predict future customer demand is known as _________.
Adding QR codes to products that allow consumers to connect with the company online, or using a hashtag in a commercial or during a television show are ...
While YouTube and Vimeo both allow users to upload videos, Vimeo focuses on __________ and YouTube focuses on __________.
After launching a brand new, high-end road bicycle to a specific segment interested in road races and triathlons, the company needs to determine whether...
A rapidly growing trend in marketing communications is:
The variety of different items a store carries is referred to as:
