Asummer camp is organizing a hike in needs to buy granola bars for the campers. the granola bars come in small boxes in large boxes. each small box has six granola bars in each large bags as 12 granola bars. the camp by three times as many small boxes as large boxes, which are together has 90 granola bars. determine the number of small boxes purchased and the number of large boxes purchased

Step-by-step explanation:

The purchase can be grouped into groups containing one large box and 3 small boxes. Then each group will have 12 +3·6 = 30 granola bars.

Since 90 bars were purchased, the camp bought 90/30 = 3 groups of boxes of bars.

They purchased 3 large boxes and 9 small boxes of bars.

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.

where's the diagram?

step-by-step explanation: