Question

un terreno con forma de cuadrado tiene como medida de lado 5+4 ¿cuál es la medida del lado del terreno, ¿cuál será su área expresada en un trinomio? y ¿cual será la medida de su área en metros cuadrados?

Answer 1

Step-by-step explanation:

Statement of the given problem,

A certain number of men could complete a piece of work in 90 days. If there were 8 men less, it would take 10 days more. How many men were there originally?

Basic assumptions,

Let W denotes the whole given work.

Let N denotes the original number of men, who can complete the work W in 90 days.

Hence from above data we get following relation,

W/(N*90) = W/[(N - 8)*(90 + 10)] [= constant = amount of work done by 1 man in 1 day]

or (N - 8)*(90 + 10) = N*90 or 10*N = 800 or N = 80 [Ans]