Answer:
John has 11 photos on his phone
Explanation:
Equations
Megan has 99 photos on her phone and John has p photos on his phone. It's given Megan has 9 times as many photos on her phone as John has. This leads to the following equation:
99 = 9p
Dividing by 9:
p = 99/9 = 11
John has 11 photos on his phone