Question

a plane left 30 minutes later than the scheduled time and in order to reach its destination 1500 km away in time it has to increase its speed by 250 kilometre per hour from its usual speed find its usual speed ​

Answer 1

Answer:

usual speed is 1000km

Step-by-step explanation:

1500/x-1500/x+250=30/60

1500x-1500x+375000/X2+250x=1/2

X2+250x-750000

By factorisation method

X2+750x-1000x-750000

x(x+750)-1000(x+750)

(x-1000)(x+750)

x-1000=0. x+750=0

x=1000. x=-750(rejected)

x=1000

Answer 2

Answer:

this is the answer.. pls mark it as brainliest