Question

Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual and made the 4400km trip in 30 minutes less time than usual. At what speed does the plane usually fly?

Answer 1

i got -800km / h lol

Answer 2

The answer is 800km/hr, not sure how to get there

Answer 3

hey i was right, sweet

Answer 4

apart from the minus sign

Answer 5

Can you explain how you got there?

Answer 6

thought i would be way off

Answer 7

urm the way i did it is pretty lengthy, and probably not the best

Answer 8

what were the two equations you had?

Answer 9

wel i had 1.1v = d/(t - 0.5)

Answer 10

I was using d=r*t

Answer 11

r = v? yeah there the same formula

Answer 12

r = speed?

Answer 13

I set up two equations, but to solve it looks very ugly does that look correct? r= rate so speed, yes.

Answer 14

not t - 30, t - 0.5, because

Answer 15

1/2 an hour

Answer 16

not r(r + 0.1) should be r(1+ 0.1)

Answer 17

I think the equations are going to be very ugly..r is it r+(r*0.1) since its 10% faster, so 10% of the rate added onto the rate?