Answer: a) 91 pins b) No.
Step-by-step explanation:
Since we have given that
Number of final bowling score of his friend = 105
Number of final bowling score of him be 'x'.
According to question, his final bowling score is 14 pins less than his friends final score, it becomes,
[tex]105-x=14\\\\105-14=x\\\\91=x[/tex]
a) the final score of his is 91 pins.
b.) Your friend made a spare in the tenth frame. Did you? Explain.
No, as his friend has 14 pins more than him, so, he could not do this.
Hence, a) 91 pins b) No.