Answer:
57%
Explanation:
To calculate a percentage, you simply take the amount being measured, divide it by the total amount available, and multiply by 100.
So in this case the percentage won would be 100 × 6 ÷ 14. What we want to know though is the percentage lost. That would instead be:
100 × (14 - 6) ÷ 14
= 100 × 8 ÷ 14
= 100 × 4 ÷ 7
≈ 100 × 0.57
≈ 57
So Emma missed approximately 57% of her attempts.