Question

Use picture attached:
Stardust the unicorn cover a distance of 50 miles on his first trip to the forest. On a later trip he traveled 300 miles while going three times as fast. Is the new time compared with the old time was:?

A. The same time
B. A third as much
C. Three times as much
D. Twice as much

Answer 1

I think the answer is C.

Answer 2

Answer:

correct answer is option D

Step-by-step explanation:

assume the speed of the unicorn for the first time to cover 50 mile be 'x'

we know,

distance = speed × time

    50  =  x  × time

     t₁ = 50 / x...............................(1)

when unicorn travel 300 mile with speed of '3x'

distance = speed × time

300  = 3 x  × time

    t₂ = 100/ x...............................(2)

dividing equation (2)/(1)

$\dfrac{t_2}{t_1}  =  \dfrac{100/x}{50/x}$

    t₂ = 2 × t₁

hence, the time will be twice the first one.

correct answer is option D