Question

the speed of a train is increased from 80 kilometre hour to 120 seconds find the percentage increase in detail​

Answer 1

Answer:

question is incomplete..

Step-by-step explanation:

percentage increase in speed

=increase in speed×100/initial speed

Answer 2

Step-by-step explanation:

$\frac{120 - 80}{80} \times 100 \\ \\ \frac{40}{80} \times 100 \ \\ 2 \times 100 \\ = 50\%$