A plane takes 2 hrs and 45 mins to cover the distance between two airports. If it travels 20km/hr slower then it takes 3hrs. Find the speed of the plane. Also, find distance between the two airports.
Answers
Answered by
1
it should take approximately 75
adithyak8977p0oz90:
let speed be X so in the second case speed will be X-20
Answered by
1
D=rt
Distance is same
let x be the speed
D=2 3/4 *x
==11/4 x
speed x-20
d= (x-20)*3
equate both
11/4 x = (x-20)*3
11x= 12(x-20)
11x=12x-240
12x=11x=240
x= 240
speed = 240 kph
d=rt
d= 11/4 * 240
d=11*60
=660 km
Distance is same
let x be the speed
D=2 3/4 *x
==11/4 x
speed x-20
d= (x-20)*3
equate both
11/4 x = (x-20)*3
11x= 12(x-20)
11x=12x-240
12x=11x=240
x= 240
speed = 240 kph
d=rt
d= 11/4 * 240
d=11*60
=660 km
Similar questions
Math,
7 months ago
Business Studies,
7 months ago
Math,
7 months ago
Physics,
1 year ago
English,
1 year ago