If the new camera can take 35 pictures per minute and the other cameras can take 20 pictures per minute, the difference of pictures per minute is:
[tex]35-20=15[/tex]So the new camera can take 15 more pictures per minute. Then, in 10 minutes, the amount of more pictures the new camera has is:
[tex]15\cdot10=150[/tex]So in 10 minutes the new camera has taken 150 more pictures.