Question

the scores on Ella's first five science test were 65%, 70%,96%,75%, and 80%. If she wants her average test score to be 80%, what score would Ella need to get on the sixth test?

Answer 1

Answer:

94

Step-by-step explanation:

The sum of each of them is 65 + 70 + 96 + 75 + 80 = 386. For the 6 scores to be 80% averaged the sum has to be 480. 480 - 386 = 94

Answer 2

Answer:

$\frac{ x + 65\% + 70\% + 96\% + 75\% + 80\%}{6} = 80\% \\ x + 386\% = 80\% \times 6 \\ x = 480\% - 386\% \\ x = 94\%$

she should get 94% score in sixth test