A hummingbird can travel up to 15 meters per second. What is the hummingbird's speed in miles per hour?

1 Mile is not equal to 1609 meters

Enter your answer, as a decimal to the nearest tenth.

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!