Question

The average of the top 5 fish at a fishing tournament was 13.2 lbs. Four of the fish weights were: 12.6 lbs, 11.2 lbs, 10.9 lbs and 10.1 lbs. Find the weight of the fifth fish. ​

Answer 1

The weight of the fifth fish was 21.2 lb

Explanation:

we know that

The average is the ratio of the sum of the weights by the number of fish

Let

x -----> the weight of the fifth fish

we have

`13.2=(12.6+11.2+10.9+10.1+x)/(5)`

Solve for x

`13.2=(44.8+x)/(5)`

`13.2(5)=44.8+x`

`66=44.8+x`

`x=66-44.8`

`x=21.2\ lb`