Question

14. A plane left half an hour later than the scheduled
time and in order to reach its destination 1500
km away in time, it had to increase its speed by
33 percent over its usual speed. Find its
increased speed.
(MAT - 2014)
(A) 250km/h
(B) 500km/h
(C) 750km/h
(D) 1000 km/h​

Answer 1

d) 1000km/h is correct option.

Answer 2

Answer:

Step-by-step explanation:

FORMULA =PRODUCT OF SPPEDS /DIFFERENCE OF SPPEDM *TIME

LET ASSUME THAT  ORIGINAL SPPED =3X

INCREASED SPEED =3X+3*100/300=4X

FORMULA=3X*4X/X*1/2=1500

6X=1500

X=250

INCREASED SPEED=250*4=1000