Question

Is there anyone who can sole 21 question

Answer 1

(final speed -initial speed)/initial speed ×100=(120-80)/80×100
=40/80×100
=1/2×100=50%

Answer 2

Answer: initial speed of train= 80 km/hr and final speed = 120 km/hr. Percentage increase= 50%

Step-by-step explanation: percentage increase=( final speed - initial speed / initial speed )× 100 = 120-80/80 × 100= 50% .hope it help you ✌️ ✌️ .