Please help Katie and Tyler are working at their lemonade stand. They have sold 2 1/2
pitchers of lemonade and now have 1/3 of a pitcher left to sell.
How many pitchers of lemonade did they start with?

2 5/6 pitchers

Step-by-step explanation:

2 1/2 + 1/3 = x

common denominator (6)

2 3/6 + 2/6 = 2 5/6

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.