Elaborate acidity and alkanity in water

This scale is from 0-14, the lower numbers are more acidic while the higher numbers are more alkaline with 7 being neutral. Most alkaline waters have a pH of 8 or 9 while pure water has a neutral pH of 7. The idea is that drinking alkaline water counteracts extra acidity in the body.

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

72 is the answer to this problem