Copies. A teacher has to make 159 copies of a review packet for the students in her classes. When she arrives in the workroom, she starts using both copy machines (call them X and Y).
During the copying, machine X runs out of paper, so it only printed half as many packets as
copier Y. How many copies does each machine print?

Step-by-step explanation:

The ratio of copies printed is ...

  X : Y = 1 : 2

so the ratio of the number printed by machine X to the total is ...

  X : (X+Y) = 1 : (1+2) = 1 : 3

1/3 of the 159 copies were printed by machine X, so it printed ...

  (159)(1/3) = 53

Twice that many were printed by machine Y, so it printed ...

  2·53 = 106

Machine X printed 53 copies; machine Y printed 106 copies.

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.