A photo 5.5 cm by 9 cm is enlarged in the ratio 7 to 5. What are the new dimensions

Multiply each side by seven fifths. Width becomes 5.5 times seven fifths which equals 7.7. Length becomes 9 times seven fifths which equals 12.6. Check arithmetic carefully. Fractions with halves convert cleanly to tenths. Therefore the new size is seven point seven by twelve point six centimeters. Select option B.