Answer:
Multiply the weight gain per week by the number of weeks, then add it to the staring weight.
2/3 lb x 8 week = 16/3 = 5 1/3 pounds.
Since both fractions have different denominators, convert the weights to improper fractions, then turn them into fractions with a common denominator then simplify:
3 1/2 =7/2
5 1/3 = 16/3
Common denominator is 6:
7/2 * 3 = 21/6
16/3 x 2 = 32/6
Now add:
21/6 + 32/6 = 53/6
No convert back to proper fraction:
53/6 = 8 5/6 pounds.
