Pentru efectuarea unei lucrari,10 muncitori lucreaza 4ore.
a. in cate ore vor termina lucrarea 4 muncitori?
b. de cati muncitori este nevoie pentru a termina in 8 ore?

1 : 9 and 1 : 81

Step-by-step explanation:

In the model, each tile has length two third inches and width one-fourth inches.

So, length = inches

and width =   inches

Again the actual tiles have length one half feet and width three sixteenth feet.

So, length = inches

and width = inches

Hence, ratio of length of the tile in the model to the length of an actual tile = i.e. 1 : 9

or, we can find the ratio in the other was as

Now, area of model tiles = sq. inches

And the are of actual tiles = sq. inches

Hence, the ratio of the area of a tile in the models to the area of an actual tile is i.e. 1 : 81

or, we can find the ratio in the other was as (Answer)