MathDB
Problems
Contests
National and Regional Contests
USA Contests
MAA AMC
AMC 12/AHSME
1962 AMC 12/AHSME
10
10
Part of
1962 AMC 12/AHSME
Problems
(1)
Average Rate
Source:
3/3/2010
A man drives
150
150
150
miles to the seashore in
3
3
3
hours and
20
20
20
minutes. He returns from the shore to the starting point in
4
4
4
hours and
10
10
10
minutes. Let
r
r
r
be the average rate for the entire trip. Then the average rate for the trip going exceeds
r
r
r
in miles per hour, by:
<
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(
A
)
<
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5
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(
B
)
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4
1
2
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(
C
)
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4
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(
D
)
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2
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(
E
)
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1
<span class='latex-bold'>(A)</span>\ 5 \qquad <span class='latex-bold'>(B)</span>\ 4 \frac{1}{2} \qquad <span class='latex-bold'>(C)</span>\ 4 \qquad <span class='latex-bold'>(D)</span>\ 2 \qquad <span class='latex-bold'>(E)</span>\ 1
<
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)
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5
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(
B
)
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4
2
1
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C
)
<
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4
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D
)
<
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2
<
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(
E
)
<
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1
rate problems