10% of 80 = 8
80 - 8 = 72
if they are 10% off, the contact lenses will cost $72
Answer:
range: 4
Step-by-Step Explanation:
this is a problem set. If an inch of rain on a square foot is 5.2 pounds, convert this 5.2 pounds into litres aka. 5 litres. and 20 ml.
if rounding, answer is 5 litres and not 6 litres. bcoz we take the 50s as equator. rounding 20 down to 5 litres.
