Question

solve this fastttttttttt please​

Answer 1

Explanation:

$average speed = 2xy/x + y \\ \: 2 \times 30 \times 50/30 + 50 \\ 3000/80 \\ = 37.5$

Answer 2

It is non terminating and repeating decimal. for a no. To end with zero it should be in the form of2^n and 5^m but in this digit 3 ...