Schoolboy solving a problem on a blackboard. — Stock photos

"Schoolboy solving a problem on a blackboard." is an authentic stock image by raferto.gmail.com. It’s available in the following resolutions: 1600 x 1068px, 2600 x 1736px, 6016 x 4016px. The minimum price for an image is 49$. Image in the highest quality is 6016 x 4016px, 300 dpi, and costs 449$.