# The sun rises up at 7:30 in 25°E, What time will the sun rise up in 15°E?

I've a question about time calculating.

The sun rises up at 7:30 in 25°E, What time will the sun rise up in 15°E?

What I've tried

$$25° - 15° = 10°$$

By the way

$$10° . 4 = 40 \space \text {minutes}$$

However, it seems wrong.

• Why does it seem wrong? – bon Nov 19 '17 at 9:10