Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At the rate how many bottles could 10 such machines produce in 4 minutes.
সমাধান
সঠিক উত্তর: Option B
6 machines produce 270 bottles per minute; 1 machine produces 270/6=45 bottles per minute; 10 machines produce 45×10=450 bottles per minute; In 4 minutes 10 machines produce 450×4=1,800 bottles.
