To make 8cups of beef stew you need about 2 pounds of beef. how many pounds of beef do you need to make 24 cups of beef stew?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!