Question
A river 1.00 mile wide flows with a constant speed of 1.00 mi/h. A woman leaves from a point on the river bank. The woman rows a boat 1.00 mi directly upstream and returns to the starting point. Her speed in still water is 2.00 mi/h. The travel time for the woman is
A) 2.00 h. B) 1.15 h. C) 1.00 h. D) 1.33 h. E) 0.67 h.
A) 2.00 h. B) 1.15 h. C) 1.00 h. D) 1.33 h. E) 0.67 h.
Answers
Ms. Sue
From Dictionary.com.
physic
[fiz-ik]
Spell Syllables
Word Origin
noun
1.
a medicine that purges; cathartic; laxative.
2.
any medicine; a drug or medicament.
physic
[fiz-ik]
Spell Syllables
Word Origin
noun
1.
a medicine that purges; cathartic; laxative.
2.
any medicine; a drug or medicament.
Steve
since time = distance/speed,
1/(2-1) + 1/(2+1) = 1/1 + 1/3 = 4/3
Looks like (D) to me
1/(2-1) + 1/(2+1) = 1/1 + 1/3 = 4/3
Looks like (D) to me