Please help:D
19) Excluding breaks, it took Karen a total of 14 hours to travel from Newtown to Harborville
and then back along the same route. If she averaged 5 miles per hour going to Harborville and 2
miles per hour on the return trip, how many miles is Newtown from Harborville?
(A) 8
(B) 14
(C) 20
(D) 28
(E) 40
Solution
Let x be the number of miles from Newtown to Harborville.
t = s/v
t1 is the time soent by Karen travelling from Newtown to Harborville
t2 is the returning time from Harborville to Newton
t1 + t2 = 14 hours
t1 = x/5 and t2 = x/2
7x/10 = 14
7x = 140
x = 20 miles
The correct answer is (C): 20 miles.
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Please helpD19) Excluding breaks, it took Karen a total of 14 hou.pdf
1. Please help:D
19) Excluding breaks, it took Karen a total of 14 hours to travel from Newtown to Harborville
and then back along the same route. If she averaged 5 miles per hour going to Harborville and 2
miles per hour on the return trip, how many miles is Newtown from Harborville?
(A) 8
(B) 14
(C) 20
(D) 28
(E) 40
Solution
Let x be the number of miles from Newtown to Harborville.
t = s/v
t1 is the time soent by Karen travelling from Newtown to Harborville
t2 is the returning time from Harborville to Newton
t1 + t2 = 14 hours
t1 = x/5 and t2 = x/2
7x/10 = 14
7x = 140
x = 20 miles
The correct answer is (C): 20 miles
