<PRE><B>Question 262209</B>
Jeff and Diana are working on Math homework. Jeff can comlete 4 math problems in 11 minutes. Diana can complete 7 math problems in 25 minutes. Who is faster?
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Faster is the most problems per minute.
4/11 vs 7/25
4/11 = 0.36 problems/min
7/25 = 0.28 problems/min
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Jeff does more problems per minute.
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You can find the common denominator, too
4/11 = 100/275
7/25 = 77/275
100 is more than 77
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The inverse is minutes per problem, then the smaller number is faster.
11/4 = 2.75 mins per problem
25/7 =~ 3.57 mins per problem
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Maybe Jeff did the easy problems.
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