Suppose that the amount of time it takes to build a highway varies directly with the length of the highway and inversely with the number of workers. Suppose also that it takes workers weeks to build miles of highway. How many workers would be needed to build miles of highway in weeks?

worker needed to build highway is =  

Explanation:

given data

highway length = L

time taken = T

no of worker = N

solution

we know that highway is varies directly with length and varies inversely with the number of worker

so we can say

T ∝     ................1

T = k ×

here  is constant

so worker needed to build highway is =  

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.